Physical and Chemical Changes Assessment

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. 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 chemical substances. Examples include burning, rusting, and baking.

Front

Can a physical change be reversed?

Back

Yes, physical changes can often be reversed. For example, ice can melt and then be refrozen.

Front

Can a chemical change be reversed?

Back

No, chemical changes usually cannot be reversed. For example, burning wood creates ash and gases that cannot be turned back into wood.

Front

What happens to the substances in a physical change?

Back

In a physical change, the substances retain their original properties and identity.

Front

What happens to the substances in a chemical change?

Back

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

Front

Give an example of a physical change.

Back

Melting of ice is an example of a physical change.

Front

Give an example of a chemical change.

Back

Burning wood is an example of a chemical change.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not create new substances, while a chemical change does.

Front

Is rusting of iron a physical or chemical change?

Back

Rusting of iron is a chemical change.