Physical and Chemical Changes

Front

What is a Physical Change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a Chemical Change?

Back

A change that results in the formation of new chemical substances.

Front

Give an example of a Physical Change.

Back

A soda can being smashed.

Front

Give an example of a Chemical Change.

Back

Eating food and digesting it.

Front

Is cutting up Play-Doh a Physical or Chemical Change?

Back

Physical Change.

Front

Is mixing baking soda and vinegar a Physical or Chemical Change?

Back

Chemical Change.

Front

Can you always see a Chemical Change?

Back

No, some chemical changes are not visible.

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 form new substances with different properties.

Front

What is an example of a reversible Physical Change?

Back

Freezing and melting of water.