Crash Course Kids Chemical Changes

Front

What is a chemical change?

Back

A process where one or more substances are transformed into new substances that cannot be easily reversed.

Front

Can chemical changes be undone?

Back

No, chemical changes cannot be undone.

Front

What happens when you combine two or more substances to make a new substance?

Back

It is called a chemical change.

Front

What is a mixture?

Back

Anything made by combining two or more different things.

Front

What is chemistry?

Back

The science of different kinds of matter and how that matter can change.

Front

What is a physical change?

Back

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

Front

Give an example of a chemical change.

Back

Burning wood, which produces ash and smoke.

Front

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

Back

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

Front

What is a reactant?

Back

A substance that is present at the start of a chemical reaction.

Front

What is a product?

Back

A substance that is produced in a chemical reaction.