Physical and Chemical 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.

Tags

NGSS.MS-PS3-4

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.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Give an example of a physical change.

Back

Dissolving sugar in water is an example of a physical change.

Front

What evidence indicates a physical change has occurred?

Back

Evidence of a physical change includes changes in shape, size, phase (solid, liquid, gas), or texture.

Front

What is an example of a chemical change?

Back

Boiling an egg is an example of a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

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.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is melting butter a physical or chemical change?

Back

Melting butter is a physical change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Front

What are some common indicators of a chemical change?

Back

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

Tags

NGSS.MS-PS1-2

Front

Can a physical change be reversed?

Back

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