Physical and Chemical Changes

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing the substance's identity, such as color, shape, or boiling point.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances, such as flammability or reactivity with acids.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition, such as melting ice or breaking glass.

Tags

NGSS.MS-PS1-4

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as burning wood or rusting iron.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change.

Tags

NGSS.MS-PS1-4

Front

Give an example of a chemical change.

Back

Burning wood is an example of a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is dissolving sugar in water a physical or chemical change?

Back

It is a physical change because the sugar can be recovered by evaporating the water.

Front

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

Back

The chemical composition of the substance changes, resulting in the formation of new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is rusting, and is it a physical or chemical change?

Back

Rusting is the process of iron reacting with oxygen and moisture to form iron oxide, and it is a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is breaking glass a physical or chemical change?

Back

Breaking glass is a physical change because it does not alter the chemical composition of the glass.