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 grams.

Front

What is anything that has mass and takes up space?

Back

Matter.

Front

What is a substance made up of chemically combined elements?

Back

Compound.

Front

When is a chemical reaction balanced?

Back

Both sides have the same number of atoms.

Front

What is the definition of mass?

Back

Mass is a measure of the amount of matter in an object.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the chemical composition, while a chemical change does.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

What is the definition of a reactant?

Back

A substance that is present at the start of a chemical reaction.