Materials can change

Cooling means to _______________.

• make something less hot.

• make something more hot.

• keep something at the same temperature.

• melt.

Is freezing water reversible?

• yes

• no

Heating means to ____________.

• make them warmer.

• freeze.

• throw.

• make colder.

What makes an ice cube melt?

• If it gets hot.

• If it gets cold.

Is burning paper reversible?

• Yes

• No