Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change in which no new substances are formed. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

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

Front

What happens to thermal energy when a liquid freezes?

Back

Thermal energy is removed when a liquid freezes.

Front

What happens to thermal energy when a solid melts?

Back

Thermal energy is added when a solid melts.

Front

What is an example of a physical change?

Back

An example of a physical change is ice melting into water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is iron rusting.

Front

True or False: Melting is a physical change.

Back

True.

Front

True or False: Burning wood is a chemical change.

Back

True.

Front

What is another name for a chemical change?

Back

Chemical reaction.

Front

What is the process of a solid turning into a liquid called?

Back

Melting.