Mass Ratios & Percent Composition Quiz

This online practice quiz is intended to give you extra practice in calculating the mass ratios and percent composition of chemical compounds.

Select your preferences below and click 'Start' to give it a try!

Number of problems:  5
 10
 25
 50
Type of problems:  Mass ratios
 Percent composition
 A mix of both mass ratios and percent composition problems
Chemical compound types:  Acids
 Ionic compounds with monatomic ions (easier)
 Ionic compounds with polyatomic ions (more difficult)
 Molecular compounds
 Common organic compounds
Chemical names or formulas:  I want formulas only (easier)
 I want names only (more difficult)
 Mix & match
Display quiz as:  Interactive web page (typical)
 Printable web page (for worksheets)