Conservation of Mass

Test yourself on Conservation of Mass

• What does the law of conservation of mass say about atoms in a chemical reaction?

• Select the correct statement in each pair about chemical reactions.

• According to the law of conservation of mass, what must the total mass of the products in a chemical reaction equal?

• In a closed system, the total mass of reactants in a chemical reaction is 20 g. What is the total mass of the products?

• In a closed system, the total mass of products in a chemical reaction is 430 g. What is the total mass of the reactants?