Physical and Chemical Changes

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new substances. Examples include rusting, burning, and baking.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance but does not change its chemical composition. Examples include melting, freezing, and breaking.

Tags

NGSS.MS-PS1-4

Front

Is a rotting pumpkin a physical or chemical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

Front

Is breaking a glass a physical or chemical change?

Back

Physical change.

Front

Is baking cookies a physical or chemical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is burning wood a physical or chemical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is slicing a banana a physical or chemical change?

Back

Physical change.

Front

What happens during a chemical change?

Back

During a chemical change, the atoms in the substances rearrange to form new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Can a physical change be reversed?

Back

Yes, many physical changes can be reversed, such as freezing and melting.

Tags

NGSS.MS-PS1-4

Front

Can a chemical change be reversed?

Back

Chemical changes are usually not reversible by simple physical means.