Physical and 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.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, involving a rearrangement of atoms.

Front

Is freezing juice a physical or chemical change?

Back

Freezing juice is a physical change.

Front

What is an example of a physical change?

Back

Examples of physical changes include melting, freezing, cutting, and dissolving.

Front

What is an example of a chemical change?

Back

Examples of chemical changes include rusting, burning, and digestion.

Front

Is rusting an example of a physical change?

Back

No, rusting is a chemical change.

Front

Does a change in color always indicate a chemical change?

Back

No, a change in color can indicate a physical change as well, but it often suggests a chemical change.

Front

Is cutting a log into small pieces a physical or chemical change?

Back

Cutting a log into small pieces 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.