Physical vs. 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.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, involving a change in the chemical composition.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Give an example of a physical change.

Back

Freezing water into ice is an example of a physical change.

Tags

NGSS.MS-PS1-4

Front

Give an example of a chemical change.

Back

The reaction between baking soda and vinegar, which produces carbon dioxide gas, 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 dissolving sugar in water a physical or chemical change?

Back

Dissolving sugar in water is a physical change.

Front

What are some indicators of a chemical change?

Back

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

Tags

NGSS.MS-PS1-2

Front

What is an example of a change in size being a physical change?

Back

Cutting a piece of paper in half is an example of a physical change in size.

Front

What is an explosion an example of?

Back

An explosion is an example of a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5