Law of Conservation of Matter/Mass

Front

What is the Law of Conservation of Matter/Mass?

Back

The Law of Conservation of Matter/Mass states that matter cannot be created or destroyed in a closed system; the total mass remains constant during a chemical or physical change.

Front

If an ice cube weighs 20 grams, how much will it weigh after it melts?

Back

20 grams

Front

What happens to the mass of reactants and products in a chemical reaction according to the Law of Conservation of Mass?

Back

The mass stays the same.

Front

When sodium and chlorine combine to form sodium chloride, what is sodium chloride called?

Back

Product

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.

Front

What is a product in a chemical reaction?

Back

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

Front

If heat is added to a cube of iron and it turns into gas, how does the weight of the gas compare to the original cube?

Back

They will weigh the same.

Front

What does it mean when we say mass is never created or destroyed?

Back

It means that in any chemical or physical process, the total mass of the substances involved remains constant.

Front

Can mass change during a physical change?

Back

No, mass remains constant during a physical change.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.