Chemical and Physical 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 changing its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

Give an example of a physical change.

Back

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

Front

Give an example of a chemical change.

Back

An example of a chemical change is a candle burning.

Front

What happens to the identity of a substance in a physical change?

Back

In a physical change, the identity of the substance stays the same.

Front

What happens to the identity of a substance in a chemical change?

Back

In a chemical change, the identity of the substance changes.

Front

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

Back

Tearing a piece of paper is a physical change.

Front

Is rusting of a bicycle a physical or chemical change?

Back

Rusting of a bicycle is a chemical change.

Front

What is an example of a reversible physical change?

Back

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

Front

What is an example of an irreversible chemical change?

Back

An example of an irreversible chemical change is baking a cake.