Physical & Chemical Changes

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 tearing.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and cannot be easily undone. Examples include rusting, burning, and digesting food.

Front

Is ripping a piece of paper a physical or chemical change?

Back

Ripping a piece of paper is a physical change.

Front

What happens to the chemical composition during a physical change?

Back

The chemical composition remains the same during a physical change.

Front

What happens to the chemical composition during a chemical change?

Back

The chemical composition changes during a chemical change, resulting in new substances.

Front

Can a chemical change be easily undone?

Back

No, a chemical change cannot be easily undone.

Front

Is breaking glass a physical or chemical change?

Back

Breaking glass is a physical change.

Front

Which of the following is NOT a physical change: digesting, crushing cans, cutting your hair, breaking an egg?

Back

Digesting is NOT a physical change; it is a chemical change.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rusting of iron.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice.