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

Give an example of a physical change.

Back

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

Front

Give an example of a chemical change.

Back

An example of a chemical change is burning wood in a campfire.

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

Is breaking glass a physical or chemical change?

Back

Breaking glass is a physical change.

Front

Is melting chocolate a physical or chemical change?

Back

Melting chocolate is a physical change.

Front

What is an indicator of a chemical change?

Back

Indicators of a chemical change include color change, gas production, temperature change, and the formation of a precipitate.

Front

What is an example of a reversible physical change?

Back

An example of a reversible physical change is boiling water to produce steam and then condensing it back to water.