**Flashcard. S8P1f. Conservation of Matter in Reactions

Front

What is the conservation of matter in a chemical reaction?

Back

Matter is conserved; the total mass of reactants equals the total mass of products.

Front

In a reaction A + B --> C, if reactant A has 5g and product C has 9g, how many grams does reactant B have?

Back

4g

Front

How does the law of conservation of mass apply to the reaction @@2KClO_3 ightarrow 2KCl + 3O_2@@?

Back

Front

In a chemical reaction within a closed system, what is conserved?

Back

Mass and the number of atoms.

Front

Back

The number of molecules produced.

Front

Define the law of conservation of mass.

Back

The law states that mass is neither created nor destroyed in a chemical reaction.

Front

What happens to the total mass of reactants in a chemical reaction?

Back

The total mass of reactants equals the total mass of products.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

Explain what is meant by a closed system in chemistry.

Back

A closed system is one where no matter enters or leaves during a reaction.