Chemical and Physical Changes

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances. Examples include burning, rusting, and cooking.

Front

What is matter?

Back

Anything that takes up space and has mass.

Front

Give an example of a physical change.

Back

Ice cream melting.

Front

Give an example of a chemical change.

Back

Burning of wood.

Front

What happens to the molecules during a physical change?

Back

The molecules rearrange but do not change their chemical structure.

Front

What happens to the molecules during a chemical change?

Back

The molecules break apart and recombine to form new substances.

Front

Is boiling water a physical or chemical change?

Back

Physical change.

Front

Is rusting of iron a physical or chemical change?

Back

Chemical change.

Front

What is an example of a reversible physical change?

Back

Freezing and melting of water.