For this conservation of mass worksheet, students experiment with vinegar, baking soda, a balloon and a flask. They compare the mass of the closed system of reactants before the experiment to the mass of the products after the experiment...

In this chemical reaction principles activity, students read about definite proportions and the law of conservation of mass. Students read about how to balance a chemical equation. Then students complete 20 fill in the blank, 2 short...

In this chemical reactions activity, students review the law of conservation of mass, the principle of definite proportions, and balancing equations. This activity has 3 problems to solve.

In this review of physical science worksheet, students use recall to answer multiple choice questions about electricity and chemical changes. Students answer 25 questions.