Chemical vs. Physical Changes

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without changing its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What happens to the state of matter during a physical change?

Back

The state of matter can change (like solid to liquid) but the substance remains the same.

Front

Can you give an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

Can you give an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What is the role of oxygen in burning?

Back

Oxygen is needed for combustion, which is a chemical change.

Front

What happens to the gas produced in a physical change?

Back

The same gas is present before and after the change.

Front

What is an indicator of a chemical change?

Back

A change in color, temperature, or the production of gas or light.

Front

What is the difference between a physical change and a chemical change?

Back

Physical changes do not create new substances, while chemical changes do.

Front

What is an example of a change that is not a chemical change?

Back

Dissolving sugar in water is a physical change.