ChemQuiz.net

Hi there! In this newsletter, I’ve included the following important updates about ChemQuiz.net:

• *NEW* quiz features!
• *NEW* VPAT/Accessibility Conformance Report (ACR)
• Share your thoughts about ChemQuiz.net!
• Bug fixes and other improvements
• Site licenses for the ChemQuiz.net Dashboard for the 2026-2027 school year

---

*NEW* quiz features!

Based on great suggestions from some of the many teachers who use ChemQuiz.net, I’ve recently added the following new quiz features to the site:

Acid-Base Neutralization Quiz

I added a new option to display chemical equations with neutralization problems, like this:

Organic Nomenclature Quiz

I also added a new problem type to write chemical formulas from organic molecule diagrams:

This new problem type currently requires the formula to be exactly the same as the accepted molecular formula in PubChem, but I’m going to add an option that allows for “fuzzy matching” that checks to make sure students have the correct numbers of atoms of each element, but allows them to enter them in any order. For example, in the first diagram, the compound 1-fluorobutan-1-amine has a chemical formula of C4H10FN, but if you activate the “fuzzy matching” option and a student enters C4H10NF instead, that will also be accepted as correct.

Stoichiometry & Limiting Reagents Quiz

Finally, I added a “start with/solve for” advanced option* for simple stoichiometry problems:

For example, when I start out teaching stoichiometry, I like to begin with problems that start with a reactant and solve for a product, so by selecting those options, I’ll only get problems like this:

Thanks to Milica, Susan, and Tyler for suggesting these new features! If you have any suggestions for new quiz features, please reach out let me know! Summer break is only a month away, so I’ll be able to devote more of my attention to adding new features and creating new quizzes soon.

* Advanced options are only available to teachers with an active site license for the ChemQuiz.net Dashboard

---

*NEW* VPAT/Accessibility Conformance Report (ACR)

Toward the beginning of this school year, I started getting a few emails from teachers and technology coordinators asking for my “VPAT”. I had no idea what that was at the time, so I did some searching and learned that VPAT stands for Voluntary Product Accessibility Template, and it helps web and software designers test whether or not their products meet certain accessibility requirements and standards. My initial tests showed that ChemQuiz.net failed some of these requirements, so over the past several months, I’ve been fixing issues and making other improvements to achieve the greatest accessibility possible for the largest number of students.

Early last month I published the ChemQuiz.net Accessibility Conformance Report (ACR) [PDF] (once the VPAT is completed, it’s called an ACR). If your school or institution requires an ACR, you can download it as a PDF using the link above, and I’ve also published it on the ChemQuiz.net Documentation page, which you can get to by clicking “Help” on the top of every page on the site. You might want to go ahead and download it now so that you have it in case your school or institution asks you for a copy in order to keep using ChemQuiz.net.

Thanks to Melanie, Christa, and Chris for reaching out about VPAT and ACR so that I became aware of this process and could make accessibility improvements to ChemQuiz.net! I want the site to help as many people learn chemistry as possible.

---

Share your thoughts about ChemQuiz.net!

I’m planning on investing in some marketing this upcoming summer and fall to increase the site’s reach, so I’d love to hear what you and your students think about ChemQuiz.net! Please consider taking a moment to share your thoughts and opinions by completing this very short feedback form:

Share your thoughts about ChemQuiz.net!

Anything you enter in the form may be used publicly in a future marketing campaign, so please only share information you’re comfortable with being seen by others. You can also help by submitting a short Google Review about ChemQuiz.net! I can’t offer anyone monetary compensation for their thoughts and opinions for ethical and legal reasons, but I’d definitely appreciate your help with spreading the word about the site so I can keep it going for years to come!

---

Bug fixes & other improvements

In addition to the new features listed above, I’ve also fixed the following bugs and added some other new features on ChemQuiz.net:

Dashboard – these also apply to PhysQuiz.net!

• new feature: added an option for Independent Students to be able to modify the tolerance on all assignments (thanks, Christina!)
• new feature: added an option for Independent Students to be able to use Continuous Mode to complete assignments

Question Banks – this also applies to PhysQuiz.net!

• bug fix: answers to multiple choice questions were not being restored from saved progress when a Question Banks assignment was resumed (thanks, Pamela!)

All Quizzes – this also applies to PhysQuiz.net!

• bug fix: assignment start time was being reset each time a student resumed an assignment from saved progress (thanks, Dabnee’!)

Most Quizzes – this also applies to PhysQuiz.net!

• bug fix: pop-out calculator wouldn’t resize properly in small browser windows (thanks, Katharine!)

Acid-Base Neutralization Quiz

• enhancement: added “Display chemical equations” option (thanks, Milica!)

Balancing, Identifying & Predicting Chemical Equations Quiz

• enhancement: added 107 new chemical reactions, mostly neutralizations

Chemical Equilibrium Quiz

• bug fix: answers & solutions were not being displayed for “Calculate chemical quantities in equilibrium reactions” problems (thanks, Hunter!)
• bug fix: “Determine reaction progress when calculating values of Q and Kc or Kp” problems with moles would crash the quiz upon grading (thanks, Lan!)

Electrochemistry Quiz

• correction: the coefficient in iodate’s electric potential equation was entered incorrectly in the database, causing it to be displayed as a subscript (thanks, Matthew!)

Hess’s Law Quiz

• bug fix: a total heat value with a positive sign in front of a negative number would occasionally be generated when the reaction was flipped, which would crash the quiz when the value was rounded (thanks, Kimberly!)

Lewis Dot Structures Quiz

• bug fix: when a Lewis diagram question was answered incorrectly, the correct answer was from a previous problem and not the actual correct answer (thanks, Dorothy!)

Organic Nomenclature Quiz

• new feature: added a new question type, “Write chemical formula from diagrams” (thanks, Susan!)

pH & pOH Calculations Quiz

• bug fix: quiz was sometimes using a diprotic base for calculating pH directly from [OH–] (thanks, Katie!)
• bug fix: rounding pOH values was inconsistent (thanks again, Katie!)

Redox Reactions & Net Ionic Equations Quiz

• correction: the signs on oxidation numbers for PH3 were swapped (P should be -3, H should be +1) (thanks, Susan!)

Significant Figures Quiz

• bug fix: subtraction problems were sometimes being generated with identical numbers, resulting in answers of 0, but 0 doesn’t have any sig figs (thanks, Katharine!)

Solubility Quiz

• correction: several barium compounds had an incorrect solubility rating (thanks, Andrew!)

Stoichiometry & Limiting Reagents Quiz

• new feature: added “start with/solve for” advanced option* for simple stoichiometry problems (thanks, Tyler!)

Other improvements

• new feature: published Accessibility Conformance Report (VPAT) (thanks, Melanie, Christa and Chris!)
• enhancement: upgraded security software due to DDOS attacks (thanks, Ashley!)

Thanks again to everyone who has reported a bug or sent in a suggestion that has improved the site! If you come across any issues or errors while using ChemQuiz.net, please fill out this short Contact form and I’ll do my best to get it fixed as fast as I can.

---

Site licenses for the ChemQuiz.net Dashboard

Thanks to everyone who has already purchased or renewed their site license for the ChemQuiz.net Dashboard for the 2026-2027 school year! Site licenses help me pay for web hosting, security software, and the software I use to write the quizzes and add new features, and it keeps the site ad-free.

By now, if your site license expires before October 30th of 2026, you should have received a renewal invoice. This sometimes goes to school “Spam” folders, so please keep an eye out for it. I like to send out invoices early so that you have plenty of time to change your payment method (e.g., use a school purchase order instead of paying out of pocket). Please reach out if you’d like a sales quote!

The benefits of having an active site license for the ChemQuiz.net Dashboard include the ability to:

• create assignments for your students using the quizzes on the site
• select the options you want that best match your students’ needs, including advanced options such as requiring correct sig figs in answers
• allow your students to save their progress as they’re working on an assignment
• build exams from multiple assignments
• create custom question banks and flashcards with your own questions and images or use questions shared by the ChemQuiz.net educator community
• use the “tab switch detection” anti-cheating feature
• review results with your students so they can correct misconceptions and grasp concepts more quickly
• track your students’ progress and download results for data analysis
• create custom rubrics to score assignments
• create timed assignments to help students prepare for state and AP® tests
• choose from hundreds of “exemplar” assignments that are ready to use in your classes, including over 160 exemplars aligned to AP® Chemistry Learning Objectives†
• provide accommodations and modifications on assignments for students with special needs

If you’d like to purchase a 12-month site license for just US$99, you can do so in any of the following ways:

• credit card through Square (the most popular option)
• school purchase order (contact me for a sales quote!)
• CashApp, PayPal, or Venmo at chris@chemquiz.net or @ChemQuizDotNet

Additional schools in the same district can purchase an add-on license for 50% off at just US$49 per school.

If your school offers physics, you can also bundle a site license for the PhysQuiz.net Dashboard for just US$49 more!

Site licenses also make it possible for me to make the ChemQuiz.net Dashboard free for the 233 U.S. public schools whose students are economically disadvantaged. If you teach in a high poverty public school in the United States (at least 50% of your students are on free/reduced lunch or designated “economically disadvantaged”), just send me a link to the supporting documentation and you’ll get a free site license for the ChemQuiz.net Dashboard forever – PhysQuiz.net, too!

---

Help me share ChemQuiz.net with the world!

If you like using ChemQuiz.net, there are now four quick and easy things that you can do to help me promote the site!

• *NEW* Submit a short Google Review!
• Add your school to the long list of supporters on the About ChemQuiz.net page! Simply go to the ChemQuiz.net Dashboard, click on “Your Info” in the top menu bar, activate the box next to “Display School on ChemQuiz.net“, and click the “Update Your Info” button.
• Tell another Chemistry teacher about ChemQuiz.net and encourage them to try out the Dashboard!
• Follow @ChemQuizDotNet on BlueSky 🦋 and share my updates with your fellow Chemistry teachers!

I wanted to acknowledge my awesome Environmental Club kids who toughed out miserable weather conditions at the Area 2 Envirothon Competition, which took place this past week at the Holden Arboretum in northeast Ohio:

We didn’t qualify for the state Ohio Envirothon Competition this year, but two of our teams scored 1st and 2nd among Portage County teams, so we kept the county trophy for the second year in a row! Also, we didn’t die of hypothermia from the wind and rain, and everyone had fun, so it was definitely a success. I highly recommend getting your students involved in the Envirothon if it’s offered in your state or country!

Thanks as always for your continued support of ChemQuiz.net, it really means a lot to me! Please feel free to contact me at any time by using the Contact form or emailing me at chris@chemquiz.net if you ever have any questions, comments, or concerns. Good luck with wrapping up this school year, especially if you have seniors! 🤪

-Chris

† AP® is a registered trademark of College Board which is not affiliated with and does not endorse ChemQuiz.net.

Hello again! In this April-Fools-free newsletter, I’ve included the following important updates about ChemQuiz.net:

• *NEW* problem types for AP® Chemistry: bond enthalpies, pH from strong acids & bases, and Le Châtelier’s principle!
• Webinar about new problem types and more on Wednesday, April 22nd at 7pm ET/4pm PT
• LOTS of bug fixes and other improvements
• Site license renewal invoices for the ChemQuiz.net Dashboard for the 2026-2027 school year
• The AP Computer Science A book I revised this past summer is out! 😱

---

*NEW* problem types for AP® Chemistry!

We’ve hit crunch time for AP® Chemistry*, so recently I’ve focused on adding question types to fill in some of the gaps on ChemQuiz.net before the exam in May. Here’s what’s new:

Enthalpy Calculations Quiz

For Topic 6.7: Bond Enthalpies, I added bond enthalpy questions with molecule diagrams like this:

Chemical Equilibrium Quiz

I also spent a lot of time adding four new reaction direction and progress problem types for Topic 7.5: Magnitude of the Equilibrium Constant and Topic 7.7: Calculating Equilibrium Concentrations:

• Determine reaction direction when given values of Kc and Kp

• Determine reaction direction when calculating values of Kc and Kp

• Determine reaction progress when given values of Q and Kc or Kp

• Determine reaction progress when calculating values of Q and Kc or Kp

I also added questions for Topic 7.9: Introduction to Le Châtelier’s Principle & Topic 7.10: Reaction Quotient and Le Châtelier’s Principle:

• Predict shift in direction of reaction due to qualitative stresses (e.g., change in T, P, V, etc.)

pH & pOH Calculations Quiz

Finally, I added problems for Topic 8.2: pH and pOH of Strong Acids and Bases:

I hope these new problem types are helpful for you and your students! If you come across any issues while using the new problem types, or if you have any suggestions for adding other topics or making improvements, please let me know!

* AP® is a registered trademark of College Board which is not affiliated with and does not endorse ChemQuiz.net. (FYI I’m required to include that language whenever I refer to AP® Chemistry.😅)

---

Webinar Wednesday, April 22nd @ 7pm ET/4pm PT

I’ve really enjoyed talking to chemistry teachers from all over the world on the ChemQuiz.net webinars this school year! Everyone has been so nice, and I’ve received so many great questions, helpful suggestions and useful bug reports that I’m glad that I started hosting these.

The next live webinar will take place on Wednesday, April 22nd 🌍 at 7pm Eastern Time/4pm Pacific Time on Zoom! This time, I’m going to focus on how to use the new AP® Chemistry problem types, and there’ll be time for a Q&A session at the end.

Please use this link to register for the webinar in advance:

https://us06web.zoom.us/meeting/register/070eGlvsSraQUVaYoQb3Bw

After registering, you should receive a confirmation email containing information about joining the meeting. If you have any topics you’d like me to add or any questions you’d like to submit in advance, please submit them using the Contact form or you can email me at chris@chemquiz.net.

I’ll also be sending out a “Certificate of Attendance” for one contact hour for everyone who attends so that you can use it for your teaching license renewal (or however your state does it). I’m looking forward to seeing you there!

---

LOTS of bug fixes & other improvements

In addition to the new features listed above, I also fixed all of the following bugs and added some new features on ChemQuiz.net:

Dashboard – these also apply to PhysQuiz.net!

• enhancement: changed the custom assignment name in the student view so that it’s bold and larger than the quiz name (thanks, Jason!)
• bug fix: student names & IDs weren’t being included in results csv export (again🤦🏻‍♂️) (thanks, Barbara and Lan!)

Question Banks – these also apply to PhysQuiz.net!

• bug fix: pop-out options were only showing up when a new Question Banks assignment was edited but not when it was created

All Quizzes

• bug fix: discovered that confetti wouldn’t work if Windows 11 accessibility setting for “Reduce motion” was activated (thanks, Katie!)

Most Quizzes – these also apply to PhysQuiz.net!

• enhancement: pop-out calculator display now resizes if the number gets too long
• bug fix: log function on pop-out calculator was returning “NaN” for every value (thanks, Heidi!)
• bug fix: pop-out calculator would incorrectly display very small numbers (e.g., 6.626×10-34) as “0” (thanks, Ryan!)

Acid-Base Neutralization Quiz

• enhancement: added “Display substances” option (thanks, Mary Jo!)

Balancing, Identifying & Predicting Chemical Equations Quiz

• bug fix: incorrect product names were being displayed on “predicting” problems in presentation mode
• bug fix: correct predicting answers were being marked as incorrect if they were chemical names and they were in a different order than the key

Bond Polarity & Electronegativity Quiz

• new feature: improved answer explanations (thanks, Savannah!)

Chemical Equilibrium Quiz

• new feature: added questions to compare current conditions/Q to given K_eq value and have students choose reaction progress (thanks, Susan!)
• new feature: added Le Châtelier’s Principle problems (thanks Trevor, Shelley and Emanuel!)
• new feature: added “explain the relationship between values of K_eq and relative concentrations at equilibrium” questions

Chemical Thermodynamics Quiz

• bug fix: quiz was using thermodynamic values for diamond instead of regular elemental carbon (thanks, Susan!)

Electrochemistry Quiz

• bug fix: electrolysis problems weren’t taking into account the coefficient of the elemental metal in calculations (thanks again, Susan!)

Elements & Isotopes Quiz

• bug fix: quiz was consistently generating multiple choice options with no correct answer when “reduce multiple choice” options was being used with some question types (thanks, Chris!)
• bug fix: quiz could sometimes generate blank multiple choice options for “Element name” and “Element symbol” question types

Enthalpy Calculations Quiz

• new feature: added bond enthalpy questions with molecule diagrams 🤩
• bug fix: necessary values for physical and chemical change problems weren’t being passed to the answer page, so the quiz would give blank answers or crash (thanks, FS!)
• bug fix: test code was showing up on the answer page (thanks again, FS!)

Gas Laws Quiz

• bug fix: commas in student responses were causing them to be graded incorrectly (thanks, Pamela!)

Intermolecular Forces Quiz

• correction: removed boric acid because it was confusing students (thanks, Keith!)

Molecular Geometry & VSEPR Quiz

• bug fix: selecting all three options for “Electron domains” would crash the quiz (thanks, Jess!)

Naming Compounds & Calculating Molar Masses Quiz

• correction: beryllium oxide was classified as “molecular” in the database, so the naming explanation was incorrect (thanks, Ashley!)

pH & pOH Calculations Quiz

• new feature: added “calculate pH from hydroxide concentration” problems (thanks, Katie!)
• new feature: added “calculate pH from strong acid & base molarity” problems
• enhancement: added “Display substances as” option (thanks, Mary Jo!)
• enhancement: improved variety of word problems

Stoichiometry & Limiting Reagents Quiz

• bug fix: correct answer was not being displayed when student answer for limiting reagent problems was incorrect (thanks, Dorothy!)
• bug fix: sig figs rounding was using excess reagent values and ignoring actual yield values with some limiting reagent problems (thanks again, Dorothy!)

Other improvements

• bug fix: students were sometimes getting a “Request Entity Too Large” error when they tried to log in (thanks, Ashley!)

Thanks as always to everyone who has reported a bug or sent in a suggestion! It helps me more than I could sufficiently explain. If you come across any issues or errors while using ChemQuiz.net, please fill out this short Contact form and I’ll try to get it fixed as fast as I can.

* Advanced options are only available to teachers with an active site license for the ChemQuiz.net Dashboard

---

Site license renewals for the ChemQuiz.net Dashboard for the 2026-2027 school year

Thanks to everyone who has already purchased or renewed their site license for the ChemQuiz.net Dashboard for the 2026-2027 school year! Site licenses help me pay for web hosting, security software, and the software I use to write the quizzes and add new features. It also keeps the website ad-free – I can’t stand web ads, especially on education sites.

In the next few days, I’ll start sending out renewal invoices for the upcoming 2026-2027 school year. If you purchased your site license through Square, I’ll send out the renewal through their site, which sometimes goes to school “Spam” folders, so please keep an eye out for it. Otherwise, I’ll send you a traditional PDF attachment. If you’d like to change your payment method (e.g., use a school purchase order instead of paying out of pocket), please let me know and I’ll be happy to generate an invoice or sales quote for whatever payment method you’d prefer!

The benefits of having an active site license for the ChemQuiz.net Dashboard include the ability to:

• create assignments for your students using the quizzes on the site
• select the options you want that best match your students’ needs, including advanced options such as requiring correct sig figs in answers
• allow your students to save their progress as they’re working on an assignment
• build exams from multiple assignments
• create custom question banks and flashcards with your own questions and images or use questions shared by the ChemQuiz.net educator community
• use the “tab switch detection” anti-cheating feature
• review results with your students so they can correct misconceptions and grasp concepts more quickly
• track your students’ progress and download results for data analysis
• create custom rubrics to score assignments
• create timed assignments to help students prepare for state and AP® tests
• choose from hundreds of “exemplar” assignments that are ready to use in your classes, including over 160 exemplars aligned to AP® Chemistry Learning Objectives
• provide accommodations and modifications on assignments for students with special needs

If you’d like to purchase a 12-month site license for just US$99, you can do so in any of the following ways:

• credit card through Square (the most popular option)
• school purchase order (contact me for a sales quote!)
• CashApp, PayPal, or Venmo at chris@chemquiz.net or @ChemQuizDotNet

Additional schools in the same district can purchase an add-on license for 50% off at just US$49 per school.

If your school offers physics, you can also bundle a site license for the PhysQuiz.net Dashboard for just US$49 more!

Site licenses also make it possible for me to make the ChemQuiz.net Dashboard free for the 232 U.S. public schools whose students are economically disadvantaged. If you teach in a high poverty public school in the United States (at least 50% of your students are on free/reduced lunch or designated “economically disadvantaged”), just send me a link to the supporting documentation and you’ll get a free site license for the ChemQuiz.net Dashboard forever – PhysQuiz.net, too!

---

Help me share ChemQuiz.net with the world!

If you like using ChemQuiz.net, there are three quick and easy things that you can do to help me promote the site!

• Add your school to the long list of supporters on the About ChemQuiz.net page! Simply go to the ChemQuiz.net Dashboard, click on “Your Info” in the top menu bar, activate the box next to “Display School on ChemQuiz.net“, and click the “Update Your Info” button.
• Tell another Chemistry teacher about ChemQuiz.net and encourage them to try out the Dashboard!
• Follow @ChemQuizDotNet on BlueSky 🦋 and share my updates with your fellow Chemistry teachers!

---

The AP Computer Science A book I revised this past summer is out! 😱

As I mentioned back in the August 2025 newsletter, I was hired by Kaplan Publishing to revise the 13th Edition of Barron’s AP Computer Science A study guide this past summer, which I worked on nearly every day for over a month and a half. The book came out a few weeks ago, and I’m super excited to finally see it in print! It was a great book to begin with, and I learned a lot from the entire experience. Plus, everyone I worked with at Barron’s was so nice and helpful (and I promise that they’re not paying me to say that because I was just a revising author so I don’t get a cut of sales or anything like that)! 😂 If you have a student or family member who’s preparing for the AP CS A exam, I humbly recommend checking it out!

---

Thanks so much for your continued support of ChemQuiz.net! Please feel free to contact me at any time by using the Contact form or emailing me at chris@chemquiz.net if you ever have any questions, comments, or concerns. For those of you in North America, I hope the last few months of the school year go smoothly for you and your students, and for everyone down under, I hope you’re off to a great start so far!

-Chris

Happy Women’s History Month! For those of us in North America, spring is just around the corner. In this newsletter, I’ve included the following important updates about ChemQuiz.net:

• *NEW* accommodations & modifications settings!
• Webinar about accommodations & modifications feature and more on Tuesday, March 24th at 7pm ET/4pm PT
• *NEW* pop-outs for Question Banks
• Bug fixes and other improvements
• Site licenses for the ChemQuiz.net Dashboard
• “Women in Chemistry” classroom resource for Women’s History Month

---

*NEW* accommodations & modifications settings!

When I added the Quiz Timer feature last month, I started working on adding a feature that would allow teachers to modify timer settings for specific students based on their IEP or 504 Plans. Providing extra time on assessments has been a very common accommodation in my teaching experience.

This got me thinking about some of the other accommodations and modifications I’ve provided to students over my career, so I’ve added the following new settings that you can individually apply to your students:

• Diagram color: Display diagrams and pictures in grayscale (no color)
• Font size: Normal, large, and extra large
• Given values: All given values are simplified (rounded to 1 sig fig)
• Multiple choice override: Replace fill-in-the-blank questions with multiple choice
• Multiple choice options: Reduce the number of multiple choice options
• Timer: Multiply the quiz timer length by 1.5×, 2×, 2.5×, or 3×, or disable it

Here’s how you can activate accommodations and modifications for your students:

• In the ChemQuiz.net Dashboard, click on Students in the top menu
• Click on the “edit” link for the student you’d like to update
• Scroll down to the new “Accommodations & Modifications” section:

• Select the accommodations and modifications that you’d like to apply to this student
• Click the pink “Update This Student” button at the bottom of the form

You can also set accommodations and modifications when you manually create a new student account.

I hope these new settings make it easier to meet your students’ individual needs! If you encounter any issues while using the new accommodations and modifications, or if you have any suggestions for additional settings you’d like to see, please let me know!

---

Webinar Tuesday, March 24th @ 7pm ET/4pm PT

The next live webinar will take place on Tuesday, March 24th at 7pm Eastern Time/4pm Pacific Time on Zoom! This time, I’m going to focus on how to use the new accommodations & modifications feature. There will also be time for a Q&A session at the end.

Please use this link to register for the webinar in advance:

https://us06web.zoom.us/meeting/register/PY2B3cIwSQOJBm7VHvtT1g

After registering, you should receive a confirmation email containing information about joining the meeting. If you have any topics you’d like me to add or any questions you’d like to submit in advance, please submit them using the Contact form or you can email me at chris@chemquiz.net.

I’ll also be sending out a “Certificate of Attendance” for one contact hour for everyone who attends so that you can use it for your teaching license renewal (or however your state does it). I’m looking forward to seeing you there!

---

*NEW* pop-outs for Question Banks assignments!

Yesterday, out of the blue, I realized that I’d never made the pop-out calculator, periodic table, and electronegativities table available for Question Banks assignments. Oops! Now, when you create or edit a Question Banks assignment, you’ll see these new settings at the bottom:

Considering how many Question Banks assignments that have been created since I introduced that feature, I’m honestly surprised that no one pointed out this oversight before now. I hope this helps make Question Banks assignments more useful!

---

Bug fixes & other improvements

In addition to the new features listed above, I also added more new features and fixed the following bugs on ChemQuiz.net:

Dashboard – these also apply to PhysQuiz.net!

• new feature: added accommodation setting for timers (1.5×, 2×, 2.5×, 3×, and no timer)
• new feature: added modification setting for reducing the number of multiple choice options
• new feature: added modification setting for replacing any fill-in-the-blank questions with multiple choice
• new feature: added modification setting to change all graphs and diagrams to grayscale
• new feature: added modification setting to generate “Simplified” values rounded to 1 sig fig
• enhancement: updated redox exemplars
• enhancement: added Beer-Lambert Law exemplars
• bug fix: student names & IDs weren’t being included in results csv export (thanks, Martin & Elizabeth!)
• bug fix: exemplar submenus (“General” & “AP Chemistry”) were missing due to a mistake in the new menu design

Question Banks – these also apply to PhysQuiz.net!

• new feature: added options to display the pop-out calculator, periodic table, and electronegativities table in Question Banks assignments
• enhancement: added new Community Banks about polyatomic ions and SI units (thanks, Dorothy!)

Most Quizzes – these also apply to PhysQuiz.net!

• enhancement: improved generation of multiple choice distractors to better avoid duplicate options due to rounding
• bug fix: elemental symbol for xenon was not being displayed on the pop-out periodic table or electronegativities table

Calorimetry Quiz

• bug fix: “Simplified” option for given values wasn’t working

Concentrations & Colligative Properties of Solutions Quiz

• bug fix: given temperature values were missing descriptions in freezing point depression problems (thanks, Antonia!)

Intermolecular Forces Quiz

• bug fix: test code was being displayed on the questions page 🤦🏻‍♂️ (thanks, Matthew E.!)

Molecular Geometry & VSEPR Quiz

• new feature: added electronegativities pop-out table to quiz options (thanks, Zack!)
• enhancement: disabled diatomic molecules because they were confusing too many people (thanks, Keith!)

Naming Compounds & Calculating Molar Masses Quiz

• enhancement: added 41 binary molecular compounds
• correction: compound name for LiOH•2H2O was incorrect (thanks, Stephen!)
• correction: improved naming explanation for HClO4•H2O (perchloric acid monohydrate) (thanks again, Stephen!)
• bug fix: beryllium nitrate wasn’t marked as having a polyatomic ion in the database (thanks, Nick!)

pH & pOH Calculations Quiz

• enhancement: improved rounding of correct answers and multiple choice options
• bug fix: correct answer for pH or pOH was being rounded to one sig fig when the value was less than 0.1 (thanks, Matthew W.!)
• bug fix: for correct answers < 1, the first multiple choice option was always the correct one

Redox Reactions & Net Ionic Equations Quiz

• enhancement: added new problem types for “oxidized/reduced” and “oxidizing agent/reducing agent” (thanks, Jess!)
• enhancement: added oxidation numbers for 21 molecular compounds

Solubility Quiz

• bug fix: quiz was using unrounded Ksp values from the database instead of rounded values displayed to students to calculate correct answers (thanks, Susan!)

Thanks to everyone who has reported a bug or sent in a suggestion! Your feedback helps me fix problems and improve the site, so if you come across any issues or errors while using ChemQuiz.net, please fill out this short Contact form and I’ll do my best to get it fixed as fast as I can.

* Advanced options are only available to teachers with an active site license for the ChemQuiz.net Dashboard

---

Site licenses for the ChemQuiz.net Dashboard

Thanks to everyone who has purchased or renewed a site license for the ChemQuiz.net Dashboard! Site licenses are how I pay for web hosting and security software, and for the software I use to write the quizzes. It also keeps the website ad-free and supports me so I can keep improving the site and adding new quizzes and features.

An active site license for the ChemQuiz.net Dashboard allows you to:

• create assignments for your students using the quizzes on the site
• select the options you want that best match your students’ needs, including advanced options such as requiring correct sig figs in answers
• allow your students to save their progress as they’re working on an assignment
• build exams from multiple assignments
• create custom question banks and flashcards with your own questions and images or use questions shared by the ChemQuiz.net educator community
• use the “tab switch detection” anti-cheating feature
• review results with your students so they can correct misconceptions and grasp concepts more quickly
• track your students’ progress and download results for data analysis
• create custom rubrics to score assignments
• create timed assignments to help students prepare for state and AP® tests
• choose from hundreds of “exemplar” assignments that are ready to use in your classes, including over 120 exemplars aligned to AP® Chemistry Learning Objectives
• *NEW* provide accommodations and modifications on assignments for students with special needs

If you’d like to purchase a 12-month site license for just US$99, you can do so in any of the following ways:

• credit card through Square (the most popular option)
• school purchase order (contact me for a sales quote!)
• CashApp, PayPal, or Venmo at chris@chemquiz.net or @ChemQuizDotNet

Additional schools in the same district can purchase an add-on license for 50% off at just US$49 per school.

If your school offers physics, you can also bundle a site license for the PhysQuiz.net Dashboard for just US$49 more!

Site licenses also make it possible for me to make the ChemQuiz.net Dashboard free for the 229 U.S. public schools whose students are economically disadvantaged. If you teach in a high poverty public school in the United States (at least 50% of your students are on free/reduced lunch or designated “economically disadvantaged”), just send me a link to the supporting documentation and you’ll get a free site license for the ChemQuiz.net Dashboard forever – PhysQuiz.net, too!

---

Help me share ChemQuiz.net with the world!

If you like using ChemQuiz.net, there are three quick and easy things that you can do to help me promote the site!

• Add your school to the long list of supporters on the About ChemQuiz.net page! Simply go to the ChemQuiz.net Dashboard, click on “Your Info” in the top menu bar, activate the box next to “Display School on ChemQuiz.net“, and click the “Update Your Info” button.
• Tell another Chemistry teacher about ChemQuiz.net and encourage them to try out the Dashboard!
• Follow @ChemQuizDotNet on BlueSky 🦋 and share my updates with your fellow Chemistry teachers!

---

Classroom resource for Women’s History Month

Last year, I shared this amazing free resource called “Diversity in Chemistry” that was created by Dr. Kate Ries of Metro State University. The site features pages and pages of chemists of different backgrounds organized by discipline, and many of the chemists were included in PowerPoint and Google Slides presentations that she created.

This year, I wanted to make a hallway display for Women’s History Month in the school where I teach, so I combined Dr. Ries’s excellent slides into one slide deck, trimmed out the guys, and made some minor cosmetic changes. The result is this “Women in Chemistry” slide deck that features 83 chemists from the past and present that you can use for your own classrooms! Here’s an example slide:

I printed them out on our library’s color laser printer (thanks, Jen!) so that each page had four slides that I could cut out, and I’m going to try to arrange them in the shape of the periodic table when I hang them up outside our chemistry classrooms on Monday. I’m hoping it will inspire some of our girls to become scientists too!

---

Thank you for your continued support of ChemQuiz.net! Please feel free to contact me at any time by using the Contact form or emailing me at chris@chemquiz.net if you ever have any questions, comments, or concerns. Hang in there – Spring Break is just around the corner!

-Chris

Hello again, and Happy Black History Month! For those of you in North America, I hope you’ve been able to stay warm during this cold, cold winter. In this newsletter, I’ve included the following important updates about ChemQuiz.net:

• *NEW* Quiz Timer!
• Webinar about Quiz Timer & more on Wednesday, February 25th at 7pm ET/4pm PT
• *NEW* Beer-Lambert Law problems!
• *NEW* font options for assignments!
• *NEW* answer explanations on the Naming Compounds Quiz
• Bug fixes and other improvements
• Site licenses for the ChemQuiz.net Dashboard
• Classroom resource for Black History Month

---

*NEW* Quiz Timer!

I’ve added a new Quiz Timer feature that you can use on any quiz on ChemQuiz.net! When the timer runs out, if they’re not done, the student’s assignment is automatically submitted. The timer floats in the upper right corner of the quiz window. Here’s what it looks like:

When the timer has less than one minute left, it changes color to let students know that time is running out:

To implement a timer in one of your assignments, follow these steps:

• In the ChemQuiz.net Dashboard, click on Assignments
• On that page, you can click on the pink “Create an Assignment” button to make a new assessment or click the “edit” link next to an existing assignment
• Scroll down to “Timer” under Advanced options
• Enter the number of minutes you’d like your students to have for that assignment
• After entering or modifying the other assignment settings to your liking, click the pink “Save New Assignment” or “Update Existing Assignment” button at the bottom of the form

If a student refreshes their browser window or switches away and comes back later, the timer will keep going, even if they close their browser entirely, because the start time is tracked in the database and will be reloaded and recalculated the next time they go to the assignment. If they come back to an assignment after the timer has expired, the assignment will automatically submit within 2 seconds and score their results as usual.

One exciting potential use of the new timer feature is creating “races” for your students with Continuous mode! Change the “Multiple attempts” setting to “Only one attempt allowed” and set the “Timer” to something reasonable depending on the topic (e.g., 10 minutes). Then, challenge your students to answer as many questions correctly as possible before the timer runs out! This could be a fun way to review before a test or exam, or to recognize a high-achieving student who doesn’t say very much in class. (I have some pretty competitive students in my 2nd period Advanced Chemistry class that I think would really enjoy this, so I’m going to try it before our upcoming quiz on calorimetry.)

I’ve also begun work on an “Accommodations” page that will allow you to modify the length of the timer for specific students who get additional time due to an IEP or 504 Plan, or you can exclude them from the timer entirely, but it’s not quite done, so look for that to be added soon. I’m also planning on adding the ability to decrease the number of multiple choice options on an assignment to three or two for selected students, but that’s likely a summer project.

I first rolled out the timer feature during the January webinar a week and a half ago, but it took a lot of testing and tweaking to get Continuous mode working properly. Despite my best efforts to anticipate the ways that students might try to find a way around the timer, there may be some bugs, issues, or strange behavior that I hadn’t anticipated, so like any new feature, I recommend testing it out yourself or with a small group of students before implementing it in class. If you encounter any problems, please let me know!

Thanks to Lan, Anamar, and Casey for suggesting the timer feature and providing feedback on it, I really appreciate it!

---

Webinar Wednesday, February 25th @ 7pm ET/4pm PT

The next live webinar of 2026 will take place on Wednesday, February 25th at 7pm Eastern Time/4pm Pacific Time on Zoom! This time, I’m going to focus on how to use the new Quiz Timer feature. There will also be time for a Q&A session at the end, like always.

Please use this link to register for the webinar in advance:

https://us06web.zoom.us/meeting/register/wnum0xjzSHKG92vmaHh22A

After registering, you should receive a confirmation email containing information about joining the meeting. If you have any topics you’d like me to add or any questions you’d like to submit in advance, please submit them using the Contact form or you can email me at chris@chemquiz.net.

I’ll also be sending out a “Certificate of Attendance” for one contact hour for everyone who attends so that you can use it for your teaching license renewal (or however your state does it). I’m looking forward to seeing you there!

---

*NEW* Beer-Lambert Law problems!

For those of you teaching AP® Chemistry, I added Beer-Lambert Law problems to the Concentrations & Colligative Properties of Solutions Quiz! To generate absorbance problems, select these options when creating an assignment:

Here are some examples of the problems that are generated:

Try out the new Beer-Lambert Law problems and let me know what you think!

---

*NEW* font options for assignments!

One issue that has existed on ChemQuiz.net since the beginning of the site in 2020 has been the ambiguity between lowercase L (“l”) and uppercase i (“I”) in the font that I chose for the quiz questions, Helvetica Neue. I wanted something that was clean and easy to read without serifs, especially for students with dyslexia, since serifs and screen use can cause increased eye strain and fatigue.

However, the lack of serifs (the little lines at the tops and bottoms of letters for some fonts, like Times New Roman and Courier New) can make “Cl” look like carbon and iodine instead of chlorine, especially for beginning chemistry students. The periodic table hanging in my classroom has this exact issue, which is why I created a periodic table handout for ChemQuiz.net with a fixed-width serif font, Consolas (which I have to admit, I’m really digging lately).

To try to give teachers more control over what their assignments look like, I’ve added a new Assignment Setting that lets you select from seven different fonts:

To change the font for your assignments, follow these steps:

• In the ChemQuiz.net Dashboard, click on Settings, then click on Assignment Settings:

• Scroll down to “Font to use for questions” and select the font you’d like to use
• Click the pink “Update Default Assignment Settings” button to save your selection

Then, you can load a preview of one of your assignments to see if you like how it looks!

Thanks to Yaritza, Annie, and Pamela for nudging me over the past two years to come up with a solution for the font issue! I’m planning on overhauling the look of the website this summer, including the default font, but it annoys me when educational websites change during the school year, so it won’t happen before July (apologies to our friends in Australia, I’ll give you a heads up!).

---

*NEW* answer explanations on the Naming Compounds Quiz

Like many of you, the district where I teach had three “calamity” days this past week, so in addition to working on the timer, I used that time to also work on adding answer explanations for the names and formulas on the Naming Compounds & Calculating Molar Masses Quiz! Here are some examples of the new explanations:

I’ve wanted to add explanations for how to name compounds and write their chemical formulas since I started the site, but there are nearly 1300 compounds in the database that are used for that quiz, so there was no way I could do that manually for every single one. Instead, I figured out how to do it algorithmically (on my own – no AI used here!) by using the established rules for naming and writing formulas for ionic compounds, covalent compounds, acids, hydrates, and simple alkanes.

If you come across any explanations that are missing or incorrect, please send me a bug report!

---

Bug fixes & other improvements

In addition to the new features listed above, I also added more new features and fixed the following bugs on ChemQuiz.net:

Dashboard – these also apply to PhysQuiz.net!

• enhancement: added a Dashboard setting to change the font on quiz questions (thanks Yaritza, Annie, and Pamela!)
• bug fix: many assignments were not showing up in the Dashboard for students due to a bug in the implementation of assignments with timers (thanks Sharon, Elisa, Ignacio, Darlene, Zack and Keith!)
• bug fix: assignments for archived/inactive classes were still showing up for students in those classes on their Current Assignments page (thanks, Kendra!)
• bug fix: clicking on the “show details” link on the Results page or a student score on the Grades page would go back to the Results page instead of showing the details if the “Show Grades Page” Dashboard Setting was selected (thanks, Jennifer!)
• bug fix: creating new accounts through CSV upload wouldn’t work if a destination class wasn’t selected (thanks, Caytee!)
• bug fix: “Create New Student Account(s)” and “Create a Class” forms would crash if there were no users already at that school (thanks Laura, Jenna, and Brian!)

Exams

• bug fix: exams would get into an “infinite loop” and never allow students to finish if there were any errors or missing sections in the temporary results for that exam (thanks, Kimberly!)

Question Banks

• bug fix: refreshing the “answers saved” page could create a duplicate entry in the temporary results database table, which caused exam grading issues (thanks, Ashley!)

All Quizzes

• new feature: timed option for quizzes that automatically submits after time runs out (thanks Lan, Anamar, and Casey!)

Most Quizzes

• enhancement: pop-out calculator now allows the use of parentheses for multiplication, e.g., entering (6)(7) would be the same as entering (6*7) (thanks, Heidi!)

Concentrations & Colligative Properties of Solutions Quiz

• new feature: added Beer-Lambert Law problems (thanks, Anna and Barbara!)

Gas Laws Quiz

• bug fix: value for standard pressure wasn’t being set, causing the quiz to crash when it tried to divide by zero (thanks, Sylvie!)

Kinetics & Rate Laws Quiz

• bug fix: rate laws with zero-order reactions were sometimes being scored incorrectly (thanks, John!)

Mass Ratios, Percent Composition & Empirical Formulas Quiz

• bug fix: duplicate multiple choice values were being displayed when the “Simplified” option for “Given values” was selected (thanks, Sean!)

Molar Conversions Quiz

• bug fix: duplicate multiple choice values were being displayed when the “Simplified” option for “Given values” was selected (thanks again, Sean!)

Molecular Geometry & VSEPR Quiz

• correction: electron hybridization for AX5E2 and AX6E1 was incorrect (thanks, Alice!)
• bug fix: test code was being displayed on the grading page

Naming Compounds & Calculating Molar Masses Quiz

• new feature: added explanations for naming and formula questions
• new feature: new advanced option* to use the American spelling for element 55 (“cesium” instead of “caesium”) (thanks, Gene!)
• new feature: new advanced option* to use the IUPAC spelling for element 13 (“aluminium” instead of “aluminum”)
• bug fix: answers were still being shown even when “do not show solutions” was selected (thanks, Heidi!)

Organic Nomenclature Quiz

• new feature: added 816 thiols (thanks, Kendra!)

Thanks to everyone who has reported a bug or sent me a suggestion! Your feedback helps me fix problems and improve the site, so if you come across any issues or errors while using ChemQuiz.net, please fill out this short Contact form and I’ll do my best to get it fixed as quickly as possible.

* advanced options are only available to teachers with an active site license for the ChemQuiz.net Dashboard

---

Site licenses for the ChemQuiz.net Dashboard

Thanks to everyone who has purchased or renewed a site license for the ChemQuiz.net Dashboard! Site licenses are how I pay for web hosting and security software, and for the software I use to write the quizzes. It also keeps the website ad-free and supports me so I can keep improving the site and adding new quizzes and features.

An active site license for the ChemQuiz.net Dashboard allows you to:

• create assignments for your students using the quizzes on the site
• select the options you want that best match your students’ needs, including advanced options such as requiring correct sig figs in answers
• allow your students to save their progress as they’re working on an assignment
• build exams from multiple assignments
• create custom question banks and flashcards with your own questions and images or use questions shared by the ChemQuiz.net educator community
• use the “tab switch detection” anti-cheating feature
• review results with your students so they can correct misconceptions and grasp concepts more quickly
• track your students’ progress and download results for data analysis
• create custom rubrics to score assignments
• create timed assignments to help students prepare for state and AP® tests

If you’d like to purchase a 12-month site license for just US$99, you can do so in any of the following ways:

• credit card through Square (the most popular option)
• school purchase order (contact me for a sales quote!)
• CashApp, PayPal, or Venmo at chris@chemquiz.net or @ChemQuizDotNet

Additional schools in the same district can purchase an add-on license for 50% off at just US$49 per school.

If your school offers physics, you can also bundle a site license for the PhysQuiz.net Dashboard for just US$49 more!

Site licenses also make it possible for me to make the ChemQuiz.net Dashboard free for the 226 U.S. public schools whose students are economically disadvantaged. If you teach in a high poverty public school in the United States (at least 50% of your students on free/reduced lunch or designated “economically disadvantaged”), just send me a link to the supporting documentation and you’ll get a free site license for the ChemQuiz.net Dashboard forever – PhysQuiz.net, too!

---

Help me share ChemQuiz.net with the world!

If you like using ChemQuiz.net, there are three quick and easy things that you can do to help me promote the site!

• Add your school to the long list of supporters on the About ChemQuiz.net page! Simply go to the ChemQuiz.net Dashboard, click on “Your Info” in the top menu bar, activate the box next to “Display School on ChemQuiz.net“, and click the “Update Your Info” button.
• Tell another Chemistry teacher about ChemQuiz.net and encourage them to try out the Dashboard!
• Follow @ChemQuizDotNet on BlueSky 🦋 and share my updates with your fellow Chemistry teachers!

---

Classroom resource for Black History Month

Two years ago, an anonymous teacher shared this great bulletin board display for Black History Month called “Celebrating African-American champions of Science & Engineering“, which includes awesome printable slides like this:

I shared this in last year’s February newsletter, but I thought I’d share it again in case you were looking for some diverse decorations for your own classroom!

---

I was getting ready to leave for school this past Friday when I noticed that my weather station had some chilling news for me 😱:

To be honest, I was lucky that my car started, otherwise I would have been walking to school. We’re only halfway through winter, so wherever you are, I hope you’re staying warm and safe!

As always, thank you SO MUCH for your continued support of ChemQuiz.net! Please reach out any time by using the Contact form or emailing me at chris@chemquiz.net if you ever have any questions, comments, or concerns. Take care!

-Chris

Happy New Year! I hope you all had a restful winter break and/or holiday, and that you’re looking forward to 2026. In this newsletter, I’ve included the following important updates about ChemQuiz.net:

• *NEW* Flashcards feature for Question Banks!

• *NEW* Dashboard features, including number of questions attempted

• Webinar about Flashcards & more on Tuesday, January 20th at 7pm ET/4pm PT

• LOTS of bug fixes and other improvements
• Updated pricing for site licenses for the ChemQuiz.net Dashboard

There’s a lot to tell you about, so I’ll do my best to keep this newsletter to the point!

---

*NEW* Flashcards feature for Question Banks!

I’ve been playing around with adding a new Flashcards feature to ChemQuiz.net for a while so that my students could use it for quiz and exam review, and I finally got it working over break with Question Banks! Here’s an example of what the new Flashcards look like:

Students can use the left and right arrow keys on their keyboard to switch between flashcards, and they can use the spacebar to flip them. The new Flashcards feature also supports images:

Click here to try out this example deck of flashcards on ChemQuiz.net!

Flashcards are a special kind of Question Banks assignment that does not accept or score student responses; instead, students can simply click on the flashcard to flip it over and see the answer on the other side. You also have the option to make the flashcards:

• show explanations/answers on the back
• show multiple choice and true/false options on the front
• “reverse” them so that the answers are shown on the front and the questions or terms are shown on the back

To create a Flashcards assignment, you can make a copy of an existing Question Banks assignment and edit it, or you can create a new Question Banks assignment the same way you’ve created assignments in the past. If you’ve never made a Question Banks assignment before, just make a copy of one of the many free Community Banks created by the ChemQuiz.net teacher community, and then click the “create an assignment” link!

Then, at the bottom of the form, under “Question Bank options”, next to the new “Display questions as” option, you can select “Flashcards” along with any additional options:

I also added a new “Alphabetical sort by answer” order option in case you want to keep your flashcards in order.

Once the Flashcards assignment is created and activated, students will see it in their Dashboard, like this:

IMPORTANT: The “Number of items” option determines how many flashcards are shown. If you want to show all of the questions in your Question Bank, you need to make sure to change this number to match the number of questions in the bank. If you set it to “Continuous mode”, it will automatically generate the correct number of flashcards for you. Additionally, other options related to scoring assignments, such as “Completion threshold”, “Multiple attempts”, “Track tab switching”, “Rubric”, “Save progress”, and “Show results to students”, will be ignored.

I strongly recommend previewing your flashcards before assigning them to students, because there may be some formatting issues that you might need to go back and tweak, especially if your questions contain images.

Please try out the new Flashcards feature and let me know what you think! I’m planning to add them to all of the quizzes in the near future, so keep an eye out for that.

---

*NEW* Dashboard features

I also made some significant changes to the Dashboard over the past week!

Dashboard menu changes

First, I re-organized and simplified the main menu:

I also moved the Exemplars page under Assignments:

This makes more sense to me since the exemplars are more likely to be used when teachers are creating or editing assignments.

Then, I moved the Grades and Export pages under Results:

This groups pages with common functions together, and it’ll allow more room in the menu in the future for new results-related features (like standards-based data analysis). I also added some new filter checkboxes to the Latest Results page.

Some teachers have told me they prefer to use the Grades page since it’s more like a traditional gradebook, so I added a Dashboard Setting called “Results Menu Button Behavior” that lets you pick whether you want the Latest Results page or the Grades page to be displayed when you click on the Results menu button:

I’m hoping that this streamlines the Dashboard so that it’s easier to find what you’re looking for while also making room for new features in the future!

Number of questions attempted

Based on a suggestion from Val, I also added a column to the Results page that shows how many questions were attempted in each assignment:

If at least one field is completed for a question, then the quiz will count it as attempted. The number of questions attempted will also show up on the Grades page if you hover your mouse cursor over a student score. I’m hoping this will give you a better idea of whether a student’s low score on an assignment is due to confusion or a lack of effort. I also added the ability to turn off the “Met Threshold” column on the Results page so you have more control over what data is displayed.

Display Topics in specific classes

Also, when you create or edit a topic, you can now have it displayed only to classes that you select:

This should make the Topics feature more useful for you and your students if you share the ChemQuiz.net Dashboard with any colleagues at your school. Thanks to Patricia, Heidi, and the many others who have contacted me with feedback and suggestions to help make this feature better!

“Under the hood” improvements

Finally, I reorganized the entire Dashboard source code so that it only loads the pieces it needs when a specific action is taken. I’m hoping that this makes it run faster, as I’m expecting website traffic to reach new records in April and May. It has also made it much easier to find and fix a bunch of little bugs that I didn’t even know were there!

However, since this was a major modification to the Dashboard, I may have accidentally introduced some new bugs that I wasn’t able to find when I was testing out the changes over break. If you come across any unusual behavior or blank pages while using the ChemQuiz.net Dashboard, please let me know and I’ll do my best to fix it ASAP!

I hope you like all of the Dashboard improvements and that they help make your job a little easier as we move into the new year!

---

Webinar Tuesday, January 20th @ 7pm ET/4pm PT

I’ve scheduled the first live webinar of 2026 for Tuesday, January 20th at 7pm Eastern Time/4pm Pacific Time on Zoom! This time, I’m going to focus on how to use the new Flashcards feature. There will also be time for a Q&A session at the end, just like before.

Please use this link to register for the webinar in advance:

https://us06web.zoom.us/meeting/register/xTrM2PrGQeWsL-tzIYQQiQ

After registering, you should receive a confirmation email containing information about joining the meeting. If you have any topics you’d like me to add or any questions you’d like to submit in advance, please submit them using the Contact form or you can email me at chris@chemquiz.net.

I’ll also be sending out a Certificate of Attendance for one contact hour for everyone who attends so that you can use them for your teaching license renewal (or however your state does it). I’m looking forward to seeing you there!

---

Bug fixes & other improvements

In addition to all of the new features listed above, I also added more new features and fixed the following bugs on ChemQuiz.net:

Dashboard – these also apply to PhysQuiz.net!

• new feature: added a column to the Results page that shows how many questions were attempted in each assignment (thanks, Val!)
• new feature: added an option to limit Topics to specific classes (thanks, Patricia and Heidi!)
• new feature: added Dashboard Settings for “Met Threshold” and “Questions Attempted” columns on the Results page
• new feature: added the ability to modify the “collapsible” setting from the Topics main page
• new feature: added and reorganized the filter checkboxes above the results table on the Latest Results page
• new feature: added a new Dashboard Setting to control default behavior for the “Results” menu button
• enhancement: moved the Exemplars page under the Assignments page
• enhancement: moved the Grades and Export pages under the Results page
• enhancement: improved the speed of the Dashboard by only loading code that’s necessary
• enhancement: decreased the font size of the Dashboard submenu to allow for future additions
• bug fix: the Assignments page would crash if there were no unarchived assignments to display (thanks, Matthew W.!)
• bug fix: the table header was being displayed without a table under a topic when using the filter resulted in no assignments for that topic
• also: fixed lots and lots and lots of little bugs

Question Banks

• new feature: Flashcards!
• new feature: added an “Alphabetical sort by answer” order option
• enhancement: significantly decreased how long it took to load the Community Banks page
• bug fix: the “manage questions” link from the Question Banks page was broken (thanks, Lan & James!)
• bug fix: the “create an assignment” link from the Question Banks page would result in a broken assignment
• bug fix: the checkbox table column was not being displayed on the Question Banks page, which resulted in a bad layout

Balancing, Identifying & Predicting Chemical Equations Quiz

• bug fix: correct answers were still being shown in Continuous mode when the “Show correct answers” option was not selected in the assignment (thanks, Heidi!)

Density Calculations Quiz

• bug fix: duplicate multiple choice values were being displayed when the “Simplified” option for “Given values” was selected (thanks, James!)

Electrochemistry Quiz

• enhancement: improved mobile formatting of Standard Reduction Potentials page

Kinetics & Rate Laws Quiz

• enhancement: improved formatting for how rate law answers were displayed on scoring page
• enhancement: improved solution setups for rate law calculation problems
• bug fix: correct answer for rate constant values was rounded by sig figs too early, which would cause some mathematically correct (non-rounded) answers to be marked as incorrect (thanks, Karam!)
• bug fix: correct answer for time problems wasn’t being passed to the function that generates multiple choice options, resulting in all zeroes 🤦🏻‍♂️ (thanks again, Karam!)
• bug fix: correct rate law answer wasn’t being displayed in multiple choice options
• bug fix: the unrounded value for rate constant was being used to calculate the correct answer for rates of reaction problems instead of using rounded value displayed to students, causing some mathematically correct answers to be marked as incorrect (thanks, Susan!)
• bug fix: some second-order reactions were still being incorrectly identified as zero-order for rate laws problems with given values that were rounded to one sig fig, so I changed the algorithm that determines the correct rate law to check for zero-order first, then first-order, then second-order last (thanks, Weston!)

Lewis Dot Structures Quiz

• correction: SeO2, SO2, TeO2 weren’t identified as violating the octet rule in the database (thanks, Val!)

Light & Energy Quiz

• bug fix: correct answers were being marked as incorrect if a non-breaking space was included, so I added a function that replaces non-breaking spaces with regular spaces before trimming them (thanks, Matthew E.!)

Molar Conversions Quiz

• bug fix: gases such as ammonia and ozone that had been excluded were still being displayed by the quiz (thanks, Colleen!)

Molecular Geometry & VSEPR Quiz

• bug fix: students couldn’t answer some unbonded electron pair questions because AX2E1 and AX2E2 molecule shapes looked identical in the 3D models that were displayed (thanks, Elisa and Val!)
• bug fix: in unbonded electron pair questions, formulas were being passed for grading even though unrelated 3D models were being used (thanks, Keith!)
• bug fix: SCN– was being scored as nonpolar even though it’s polar (thanks again, Keith!)
• bug fix: 3D models for linear molecules in electron hybridization questions were too vague (thanks, Susan!)

Naming Compounds & Calculating Molar Masses Quiz

• bug fix: compounds with mercury were still being displayed by the quiz even if mercury was excluded (thanks, Andrew!)

Organic Nomenclature Quiz

• new feature: added 399 amides (thanks, Kendra and Richard!)

Percent Error & Percent Yield Quiz

• bug fix: multiple choice options were excluding the correct answer when the “Simplified” option for “Given values” was selected (thanks, Shauna and Krisha!)

Redox Reactions & Net Ionic Equations Quiz

• bug fix: the correct net ionic equation was being scored as incorrect because the student used em dash instead of a negative sign, so the quiz now accepts em dash (thanks, Lan!)

SI Conversions & Dimensional Analysis Quiz

• new feature: added an advanced option* to exclude certain units (thanks, Patrisha and Val!)
• bug fix: older assignments were showing the string “chemistry” for all units because I messed up the backward compatibility when I added the new feature to select specific units 🤦🏻‍♂️ (thanks, Talayla!)

Significant Figures Quiz

• new feature: added an advanced option* to choose the order(s) of magnitude for randomly generated values for the quiz (thanks, Monique and Jennifer!)

Stoichiometry & Limiting Reagents Quiz

• bug fix: answers for percent yield had an incorrect number of sig figs (thanks, John!)
• bug fix: multiple choice options were often identical when the “Simplified” option for “Given values” was selected (thanks, Paul!)

Thermochemical Equations Quiz

• bug fix: multiple choice options were often identical when the “Simplified” option for “Given values” was selected (thanks again, Paul!)

Other improvements

• enhancement: updated the Common Ions handout with all multivalent metals used on the site (thanks Jason, Lance, and Lance’s students!)
• correction: updated documentation across the site

Thanks so much to everyone who has sent in a suggestion or reported a bug! Your feedback really helps me track down and fix problems, so if you come across any issues or errors while using ChemQuiz.net, please fill out this short Contact form and I’ll try to get it fixed as quickly as possible.

* advanced options are only available to teachers with an active site license for the ChemQuiz.net Dashboard

---

Updated pricing for site licenses for the ChemQuiz.net Dashboard

After careful consideration, I’ve made the difficult decision to increase the price of a site license for the ChemQuiz.net Dashboard to $99 per school per year. Costs have gone up over the past several years for the web hosting and security software that I use for the site, and I will never put ads on the site. I’m also committed to continuing to improve the site with new features and topics, and I plan on offering free site licenses for high poverty schools across the United States forever, so those ongoing expenses are fully supported by site licenses.

(Please note that this price change applies to site license purchases and renewals on or after January 1st, 2026. Pricing for any outstanding sales quotes from 2025 will still be honored, and schools who have purchased multiple years will not be affected until their next renewal.)

An active site license for the ChemQuiz.net Dashboard allows you to:

• create assignments for your students using the quizzes on the site
• select the options you want that best match your students’ needs, including advanced options such as requiring correct sig figs in answers
• allow your students to save their progress as they’re working on an assignment
• build exams from multiple assignments
• create custom question banks and flashcards with your own questions and images or use questions shared by the ChemQuiz.net educator community
• use the “tab switch detection” anti-cheating feature
• review results with your students so they can correct misconceptions and grasp concepts more quickly
• track your students’ progress and download results for data analysis
• create custom rubrics to score assignments

If you’d like to purchase a 12-month site license for just US$99, you can do so in any of the following ways:

• credit card through Square (the most popular option)
• school purchase order (contact me for a sales quote!)
• CashApp, PayPal, or Venmo at chris@chemquiz.net or @ChemQuizDotNet

Additional schools in the same district can purchase an add-on license for 50% off at just US$49 per school.

If your school offers physics, you can also bundle a site license for the PhysQuiz.net Dashboard for just US$49 more!

Site licenses also make it possible for me to make the ChemQuiz.net Dashboard free for the 221 U.S. public schools whose students are economically disadvantaged. If you teach in a high poverty public school in the United States (at least 50% of your students on free/reduced lunch or designated “economically disadvantaged”), just send me a link to the supporting documentation and you’ll get a free site license for the ChemQuiz.net Dashboard forever – PhysQuiz.net, too!

---

Help me share ChemQuiz.net with the world!

If you like using ChemQuiz.net, there are three quick and easy things that you can do to help me promote the site!

• Add your school to the long list of supporters on the About ChemQuiz.net page! Simply go to the ChemQuiz.net Dashboard, click on “Your Info” in the top menu bar, activate the box next to “Display School on ChemQuiz.net“, and click the “Update Your Info” button.
• Tell another Chemistry teacher about ChemQuiz.net and encourage them to try out the Dashboard!
• Follow @ChemQuizDotNet on BlueSky 🦋 and share my updates with your fellow Chemistry teachers!

---

Thanks so much for your continued support of ChemQuiz.net! As always, please feel free to use the Contact form or email me at chris@chemquiz.net if you ever have any questions, comments, or concerns. I hope you have a great year!

-Chris

Welcome back! For everyone in North America, I hope you had a relaxing summer break. There’s lots of new stuff on ChemQuiz.net that I’m excited to share with you:

• Please consider helping Tivy High School in Kerrville, Texas! 💙
• Two new quizzes + new Dashboard and quiz features!
• First ever webinar on Monday, August 18th at 7pm ET/4pm PT 🤙🏻
• Bug fixes and other improvements
• Site license renewals for the 2025-2026 school year
• Happy anniversary to ChemQuiz.net (and me!)! 🥳

---

Please consider helping Tivy High School!

Tivy High School is located in Kerrville, Texas, which is in the heart of the Hill Country that was devastated by flooding this past 4th of July. Tivy High School is also a ChemQuiz.net school, so I reached out to their Chemistry teacher and confirmed that she and her family are safe. Unfortunately, many in their community have been hit really hard, including their soccer coach and his family who were killed by the flood.

Tivy High School is going to need a lot of help to get through this disaster, so she recommended the Kerrville Public School Foundation, which is a nonprofit that gives out teaching grants and student scholarships. By giving to their foundation, you can help directly support their teachers and students.

To get an idea of what Kerrville has been going through, I found this excellent but heartwrenching article about the Tivy High School principal, who led a fleet of school buses to rescue kids from camps that were near the Guadalupe River. He also described how their school was turned into a flood rescue site almost immediately after the flooding happened.

I donated to KPSF last month and they sent me a very nice and heartfelt thank you card that I’m going to hang in my office when we go back to school in a couple weeks to help remind me of the  importance of community when a disaster happens. If you can, please consider helping to get Tivy High School through this terrible tragedy – everything goes to help the teachers and kids, and even the smallest amount helps!

---

Two new quizzes – Photoelectron Spectroscopy and Coulomb’s Law!

If you follow ChemQuiz.net on BlueSky – and you should! – then you already know about the two new quizzes that I added back in June.

Photoelectron Spectroscopy (PES) Quiz

This new quiz was a lot of fun to make! Here are some examples of the types of questions that the quiz can generate:

Thanks to Rhonda and Anna for suggesting this new quiz, and thanks also to my former student and intern Katherine for entering all the binding energy values into the database!

Coulomb’s Law Quiz

The Coulomb’s Law Quiz has been on PhysQuiz.net since that site was created two years ago, but several teachers have asked me to also make it available on ChemQuiz.net, so here it is! I also thought it would be fun to add some fancy new diagrams to the problems that are generated:

Thanks to Andrew and Don for pushing for this – I’m glad I added it to ChemQuiz.net so that I had an excuse to learn how to do gradients in scalable vector graphics!

---

New Dashboard & quiz features

First, if you’ve used the ChemQuiz.net Dashboard before, you may notice that the “Create an Assignment” form looks a little different now! This past school year, when I was creating assignments for my own Chemistry classes, I felt that the form had become disorganized as more features were added over the years, so I grouped similar settings together in a more logical manner. I also made the specific quiz options load dynamically so that you don’t have to go to a second page in order to modify them.

Next, I added around 130 new exemplar assignments that align with the AP® Chemistry curriculum that are numbered to match the Topics and Science Practices in the CED. I also made a curriculum crosswalk between ChemQuiz.net and AP® Chemistry. I’ve identified gaps in the AP® topics on ChemQuiz.net and I’m planning to fill as many of them as possible as the school year goes on. If you teach AP Chem, I hope you find them useful. Thanks to Drew and Diane for suggesting this! (Please note that I’m required to include the following disclaimer: “AP® is a registered trademark of College Board which is not affiliated with and does not endorse ChemQuiz.net.” I’m also required to use that ® symbol. 😆)

Finally, I’ve received a number of concerned emails from teachers who have logged in and were wondering if their assignments were all deleted over the summer. Don’t panic – they’re still there! As I detailed in the June newsletter, I archive all student accounts, assignments, quiz results, and classes that were created during the 2024-2025 school year. To restore an assignment, simply go to the Assignments page, check the box next to “Also display archived assignments”, and then click the pink “Filter” button. To restore an assignment, simply click the “restore” link at the end of the table row. If you encounter any issues with this process, or if you just want me to do it for you, contact me and I’ll be happy to restore your stuff!

Enough people emailed me about archived assignments that I added a new Dashboard Setting to allow you to opt out of the archiving process each summer. Simply go to the Settings page in the ChemQuiz.net Dashboard, click on Dashboard Settings in the top menu, then scroll to the bottom and check the box next to “Skip Summer Maintenance”, and click the pink “Update Dashboard Settings” button:

I hope this helps prevent any future panic!

Significant figures and rounding

I added an advanced option* to require students to enter their answers rounded to the correct number of significant figures (sig figs) in each of the following quizzes:

• Acid-Base Neutralization Quiz
• Calorimetry Quiz
• Chemical Equilibrium Quiz
• Chemical Thermodynamics Quiz
• Concentrations & Colligative Properties of Solutions Quiz
• Coulomb’s Law Quiz
• Density Calculations Quiz
• Electrochemistry Quiz
• Enthalpy Calculations Quiz
• Gas Laws Quiz
• Hess’s Law Quiz
• Kinetics & Rate Laws Quiz
• Light & Energy Quiz
• Molar Conversions Quiz
• Percent Error & Percent Yield Quiz
• SI Conversions & Dimensional Analysis Quiz
• Solubility Quiz
• Stoichiometry & Limiting Reagents Quiz
• Thermochemical Equations Quiz

I did my best to follow the sig fig rules for all of the calculations on all of the quizzes, but nothing makes kids mad quite like enforcing sig figs, so use this feature at your own risk! 😅If you notice any answers that aren’t rounded correctly, please let me know. (Also, I skipped logs and exponents because those sig fig rules are weird.) Thanks John, Karen, Ashley, Malcolm, and Neil for requesting this feature over the past couple years – it’s finally done!

I also added an advanced option* to require specific rounding to these two quizzes:

• Mass Ratios, Percent Composition & Empirical Formulas Quiz
• Naming Compounds & Calculating Molar Masses Quiz

Finally, I added an advanced option to select the +/- range of acceptable answers on the Scientific Measurement Quiz. Thanks to Susan for suggesting this!

Pop-out calculator

I was also asked over the summer if it would be possible to embed a very popular online calculator into the quizzes. I contacted the company and they were very friendly, and yes, it was possible to do that, but frankly it was going to cost more than I wanted to pay. Anyone who knows me knows how cheap I am, so I wrote a simple Javascript calculator instead:

I’m hoping this will help students who don’t have their own calculator while also allowing teachers to use the tab switch detection features. I’ve tested the calculator a lot, but I can’t possibly anticipate all the weird things kids will do, so if it misbehaves (the calculator, not the kids), please submit a bug report! Thanks again to Drew for giving me this idea!

Mass spectrometry graphs

Finally, I added mass spectrometry graphs to the Average Atomic Masses Quiz:

Thanks again to Anna for this great suggestion!

What didn’t get done

At the beginning of July, I was hired by Kaplan Publishing to revise the Barron’s AP Computer Science A study guide. The whole thing came out of nowhere – I still don’t know how they found me. I finished the book about two weeks ago and the revised 13th edition will come out in March. I’m really happy with how it turned out (they even put my name on the cover! 🤣), but working on the book took away time from the new features I had planned on adding to ChemQuiz.net over the summer. Since I listed these in the last newsletter and I believe in full transparency, here’s a list of what I wasn’t able to finish before sending out this newsletter:

• Standards-based scoring of student results – Based on feedback that I received from teachers on the survey in June, I prioritized finishing the sig figs feature over implementing standards-based scoring, but I’ve already put all the NGSS and AP® standards into the database, so I’m hoping to have this implemented soon.
• LMS integration – I spent a full day in June focusing only on implementing Canvas integration and basically got nowhere. I also set up a demo account with a third-party company that handles LMS integrations, but it’s very expensive (several times more than the entire cost of hosting ChemQuiz.net), so unfortunately LMS integration is on hold for now. I know that this feature has been requested by a lot of teachers and would make life much easier for everyone, so I’m sorry that I couldn’t get this done.
• Flashcard mode – I absolutely want to implement this feature so I can use in my own classes this year now that my own district has blocked a very popular flashcard site because of student privacy concerns, so this is a high priority for me.
• Mobile device compatibility – The site still looks ugly on phones, but last week I had lunch with a former student of mine who’s now a lead software developer for a nationwide retailer, and he explained CSS grids in a way that makes so much more sense than anything else I’ve read so far, so it feels much more achievable now.

I’m sorry that I couldn’t get these new features added over the summer, but the book opportunity was too good to pass up, and I learned a lot from that whole process. Don’t worry, though – I’ll continue to improve the site and add new features and quizzes throughout the upcoming school year and beyond!

* advanced options are only available to teachers with an active site license for the ChemQuiz.net Dashboard

---

Webinar Monday, Aug. 18 @ 7pm ET/4pm PT

For the first time ever, I’ll be hosting a free ChemQuiz.net webinar on Monday, August 18th at 7pm Eastern Time/4pm Pacific Time on Zoom! I’m going to go through some of the basics of how to use the ChemQuiz.net Dashboard – setting up classes and student accounts, creating assignments, looking at results – and then I’ll share some tips and tricks that have worked for me with my students. Finally, I’ll wrap up with a Q&A session, which would be a great opportunity to heckle me if you’re so inclined 😂. Please use this link to register in advance:

https://us05web.zoom.us/meeting/register/7lunGI-nSwGYQC6nH0ZoGQ 

After registering, you should receive a confirmation email containing information about joining the meeting. If it all goes well and everyone thinks it’s helpful, I’d be happy to do more webinars in the future!

---

Bug fixes & other improvements

In addition to the new features listed above, I added following improvements and bug fixes across ChemQuiz.net:

Dashboard

• new feature: added exemplar assignments that align with the AP® Chemistry curriculum (thanks, Drew & Diane!)
• new feature: added a “skip summer maintenance” option to Dashboard Settings
• enhancement: updated “Create Assignment” form so that it dynamically loads options based on which quiz is selected so that it’s all on one page
• enhancement: added exemplar assignments for Lewis structures
• enhancement: added vocabulary assignments from LibreTexts question banks for Independent Students
• bug fix: hidden assignments weren’t being displayed on the “All Assignments” page for Independent Students, so they couldn’t unhide them (thanks, Tara!)
• bug fix: exemplar assignments weren’t sorted in the dropdown list for Exam sections (thanks, Lance!)
• bug fix: the Dashboard would crash if tags were entered but a quiz wasn’t selected on the Assignment creation form
• bug fix: tags were being wiped out when exam sessions were added or modified

Question Banks

• bug fix: the “create an assignment” link from a question bank was crashing the page
• bug fix: multiple choice answers with apostrophes (e.g., “Hess’s Law”) weren’t being scored correctly (thanks, Adrian!)

All quizzes

• bug fix: the resources message was being displayed at the bottom of assignments for Independent Students even if there were no resources

Most quizzes

• new feature: added an advanced option* to require correct significant figures in answers to relevant quizzes (thanks John, Karen, Ashley, Malcolm & Neil!)
• new feature: added a pop-out calculator to relevant quizzes (thanks, Drew & Heidi!)

Average Atomic Masses Quiz

• new feature: added an option for dynamically generated mass spectrometry graphs (thanks, Anna!)

Balancing, Identifying & Predicting Chemical Equations Quiz

• bug fix: entering a space in front of a correct coefficient would cause it to be marked as incorrect (thanks, Dorothy!)

Bond Polarity & Electronegativity Quiz

• bug fix: “Load More Problems” shows more problems but won’t grade them or show the key

Calorimetry Quiz

• bug fix: for “Challenging” problems solving for c, the answer was inadvertently being converted to J/g•°C when the problem was originally in cal/g•°C (thanks, Elaine!)

Coulomb’s Law Quiz

• new feature: added dynamically generated diagrams

Chemical Equilibrium Quiz

• bug fix: solution setups were incorrect for quantity problems solving for mass

Chemical Thermodynamics Quiz

• bug fix: word problems for nonstandard conditions involving Q weren’t converting °C to K correctly (thanks, Mary Ann!)

Concentrations & Colligative Properties of Solutions Quiz

• bug fix: solution setup for some freezing point depression problems had molality value shown in an equation twice

Electrochemistry Quiz

• bug fix: quiz would crash when generating electrolysis reactions if no mass or time options were selected (thanks, Jaime!)

Enthalpy Quiz

• new feature: added an option for greater control over the types of questions generated
• new feature: added heat of solidification and condensation problems
• enhancement: improved problem generation (e.g., random sig figs, better wording in list view)
• bug fix: removed trimethylammonium chloride because it was crashing the quiz

Hess’s Law Quiz

• enhancement: improved quality of multiple choice options

Kinetics & Rate Laws Quiz

• enhancement: improved quality of given values

Light & Energy Quiz

• enhancement: improved quality of given values

Mass Ratios, Percent Composition & Empirical Formulas Quiz

• new feature: added an advanced option* to require answers to be rounded to a specific place (thanks, Malcolm!)

Molar Conversions Quiz

• new feature: added an option to select the new standard for molar volume (22.7 L/mol at STP) or old standard (22.4 L/mol) (thanks, Matthew A.!)

Molecular Geometry & VSEPR Quiz

• bug fix: multiple choice options were not showing up in printable mode

Naming Compounds & Calculating Molar Masses Quiz

• new feature: added an advanced option to require answers to be rounded to a specific place (thanks again, Malcolm!)

Nuclear Chemistry Quiz

• bug fix: units were incorrect for “final amount” questions

Redox Reactions & Net Ionic Equations Quiz

• correction: two net ionic equations were incorrect and another had unreduced coefficients (thanks, Nick!)

Scientific Measurements Quiz

• new feature: added an advanced option* to select the range of acceptable answers (thanks, Susan!)

Stoichiometry & Limiting Reagents Quiz

• new feature: added an option to select the new standard for molar volume (22.7 L/mol at STP) or old standard (22.4 L/mol) (thanks, Matthew A.!)
• bug fix: answers for regular stoichiometry problems were not being calculated correctly (thanks, Rhonda!)
• bug fix: percent yield problems that needed to calculate the amount of reactant first were calculating something else entirely (thanks, Zack & Matthew E.!)

* advanced options are only available to teachers with an active site license for the ChemQuiz.net Dashboard

Thanks again to everyone who has sent in a suggestion or reported a bug! If you come across any problems or issues while using ChemQuiz.net, please fill out this short Contact form so I can do my best to fix it as soon as possible.

---

Site licenses for the ChemQuiz.net Dashboard

Thank you to everyone who renewed their school’s site license for the ChemQuiz.net Dashboard for the 2025-2026 school year! Site licenses are how I pay for the web hosting and the software I use to write the quizzes, and it keeps the website ad-free. I already sent out renewal invoices to everyone with a site license that’s expiring soon, but if you didn’t receive one, please let me know.

If you’re considering purchasing a site license for the ChemQuiz.net Dashboard, now’s a great time to do it! With an active site license, you can:

• create assignments for your students using the quizzes on the site
• select the options you want that best match your students’ needs, including advanced options such as requiring correct sig figs in answers
• allow your students to save their progress
• build exams from multiple assignments
• create custom question banks with your own questions and images or use questions shared by the ChemQuiz.net educator community
• use the “tab switch detection” anti-cheating feature
• review results with your students so they can correct misconceptions and grasp concepts more quickly
• track your students’ progress and download results for data analysis
• create custom rubrics to score assignments

If you’d like to purchase a 12-month site license for just US$70, you can do so in any of the following ways:

• credit card through Square (the most popular option)
• school purchase order (contact me for a sales quote!)
• CashApp, PayPal, or Venmo at chris@chemquiz.net or @ChemQuizDotNet

Additional schools in the same district can purchase an add-on license for 50% off at just US$35 per school.

If your school offers physics, you can also bundle a site license for the PhysQuiz.net Dashboard for just US$35 more!

Site licenses also make it possible for me to make the ChemQuiz.net Dashboard free for nearly 200 U.S. public schools whose students are economically disadvantaged. If you teach in a high poverty public school in the United States (at least 50% of your students on free/reduced lunch or designated “economically disadvantaged”), just send me a link to the supporting documentation and you’ll get a free site license for the ChemQuiz.net Dashboard forever – PhysQuiz.net, too!

---

Help me share ChemQuiz.net with the world!

If you like using ChemQuiz.net, there are three quick and easy things that you can do to help me promote the site!

• Add your school to the list of supporters on the About page! Simply go to the ChemQuiz.net Dashboard, click on “Your Info” in the top menu bar, activate the box next to “Display School on ChemQuiz.net“, and click the “Update Your Info” button.
• Tell another Chemistry teacher about ChemQuiz.net and encourage them to try out the Dashboard!
• Follow @ChemQuizDotNet on BlueSky 🦋 and share my updates with your fellow Chemistry teachers!

---

Happy anniversary to ChemQuiz.net – and me!

This summer marks the 5th anniversary for ChemQuiz.net, which is hard for me to believe, because it feels like yesterday when I was sitting on my deck coding the site into existence during the “lockdown”. The entire experience of building, running, and improving this website has been incredibly positive and supportive – easily one of the best experiences of my entire teaching career. Thank you all so much for supporting ChemQuiz.net over the past five years and helping me to make it a better resource for everyone!

Tomorrow is also my 22nd anniversary with my wife, Tara, who has supported me through this entire experiment and has served as the voice of reason whenever I’ve been unsure about what I should do. To celebrate, we’re heading to Pittsburgh on Saturday to see The Flaming Lips, who we first saw together a week before we got married back in 2003. I’m hoping they play some songs from “The Soft Bulletin“, which is one of my favorite albums of all time, but I’m just glad I get to go with my best friend!

Thanks for supporting ChemQuiz.net! Please feel free to contact me any time using the Contact form or by emailing me at chris@chemquiz.net if you have any questions, comments, or concerns. Good luck with this upcoming school year – I have a feeling we’re all going to need as much luck as we can get! 🍀