Chemical vs 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 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 paper is an example of a physical change.

Front

Give an example of a chemical change.

Back

Boiling an egg is an example of a chemical 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

Is mixing oil and vinegar a physical or chemical change?

Back

Mixing oil and vinegar is a physical change.

Front

What is rusting?

Back

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture to form iron oxide.

Front

What is the difference between a reversible and irreversible physical change?

Back

A reversible physical change can be undone (e.g., melting ice), while an irreversible physical change cannot be undone (e.g., cutting wood).

Front

What are some indicators of a chemical change?

Back

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