Physical and Chemical Changes

Front

What is a chemical change?

Back

A change where one or more new substances are created.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

Is rusting of iron a physical or chemical change?

Back

Chemical Change.

Front

What is an example of a physical change?

Back

Crumpling paper.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

Is melting butter for popcorn a chemical or physical change?

Back

Physical Change.

Front

What indicates a chemical reaction has occurred?

Back

Formation of a gas, change in color, or temperature change.

Front

True or False: Change in color is always a chemical change.

Back

False.

Front

What happens during a physical change?

Back

The substance changes form but not its chemical identity.

Front

What is an example of a sign of a chemical change?

Back

Bubbles forming in a liquid.