Worksheet
Curated OER

Chemical Calculations and Chemical Formulas

For Students 11th - 12th
In this stoichiometry worksheet, learners calculate molar masses, empirical and molecular formulas to solve 105 problems and short answer questions.
Lesson Plan
Chymist

Determination of the Volume of CO2 in Pop Rocks

For Students 9th - 12th
Where does the pop in pop rocks come from? An engaging activity asks scholars to measure the amount of carbon dioxide in a package of Pop Rocks candy. Learners dissolve the candy in water and use the solubility of CO2 to determine its mass.