Physical vs. Chemical Changes

Front

What happens when a substance undergoes a physical change?

Back

Some physical properties change, but the substance keeps its identity.

Front

What is a chemical change?

Back

A change in which NEW substances are formed.

Front

Is melting butter for popcorn a chemical or physical change?

Back

Physical change.

Front

What type of change occurs when a nail rusts?

Back

A chemical change.

Front

What is an example of a chemical change that happens inside your body?

Back

Food being broken down by enzymes in your stomach.

Front

What is a physical change?

Back

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

Front

Give an example of a physical change.

Back

Ice melting into water.

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

What happens to the molecules during a chemical change?

Back

The molecules rearrange to form new substances.

Front

What is an example of a chemical change in cooking?

Back

Baking a cake, where ingredients react to form new substances.