Understanding Changes in Matter

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What are the two main types of changes in matter?

Back

The two main types of changes in matter are physical changes and chemical changes.

Front

What is a physical change?

Back

A physical change is a change in the shape or size of matter without changing its identity.

Front

What is a chemical change?

Back

A chemical change is a change that creates a new substance.

Front

Can physical changes be reversed?

Back

Yes, physical changes can often be reversed.

Front

Can chemical changes be reversed?

Back

Chemical changes are not easy to reverse because they create new substances.

Front

What often accompanies a chemical change?

Back

Heat, light, or color changes often accompany a chemical change.

Front

Give an example of a physical change.

Back

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

Front

Give an example of a chemical change.

Back

An example of a chemical change is burning wood into ash and smoke.

Front

What happens to the substances in a chemical change?

Back

In a chemical change, the original substances are transformed into new substances.