Physical or Chemical Change

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

Cutting hair is an example of a physical change.

Front

Give an example of a chemical change.

Back

Adding baking soda to vinegar, which produces carbon dioxide gas, is an example of a chemical change.

Front

What happens to the chemical composition of a substance during a physical change?

Back

The chemical composition of a substance remains the same during a physical change.

Front

What happens to the chemical composition of a substance during a chemical change?

Back

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

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change.

Front

Is tearing paper a physical or chemical change?

Back

Tearing paper is a physical change.

Front

What is an indicator of a chemical change?

Back

An indicator of a chemical change can include color change, gas production, temperature change, or the formation of a precipitate.

Front

What is an example of a reversible physical change?

Back

Melting and freezing of water are examples of reversible physical changes.