Law of Conservation of Mass

Front

What is the Law of Conservation of Mass?

Back

Mass is never created or destroyed.

Front

If Bob puts 200 grams of ice into a pitcher with 900 grams of water, how many grams of water does he have after the ice melts?

Back

1,100 g

Front

Matter cannot be created nor destroyed; it can only be...

Back

Transformed, changed.

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

In the reaction AB --> A + B, if reactant AB has 12g and product B has 5g, how many grams should product A have?

Back

7g

Front

What does the Law of Conservation of Mass imply about chemical reactions?

Back

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

Front

What happens to the mass of substances during a physical change?

Back

The mass remains the same.

Front

Can mass be created or destroyed in a chemical reaction?

Back

No, mass cannot be created or destroyed.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.