Chemical and Physical Changes

Front

What is a physical change?

Back

A change in the form or appearance of a substance without changing its chemical composition.

Front

What is a chemical change?

Back

A process where two or more substances combine to form a new chemical substance.

Front

Give an example of a physical change.

Back

Ripping paper.

Front

Give an example of a chemical change.

Back

Fireworks exploding.

Front

What happens to substances during a physical change?

Back

The substances retain their original properties and can often be reversed.

Front

What happens to substances during a chemical change?

Back

The substances change into new substances with different properties.

Front

Is boiling water a chemical change or a physical change?

Back

Physical change.

Front

Is baking bread a chemical change or a physical change?

Back

Chemical change.

Front

What is an indicator of a chemical change?

Back

Formation of a new substance, color change, gas production, or temperature change.

Front

What is an example of a reversible physical change?

Back

Melting ice.