Changes in Matter

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What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance without changing its chemical composition.

Front

Give an example of a chemical change.

Back

Frying an egg is an example of a chemical change because it results in the formation of new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Give an example of a physical change.

Back

Boiling water is an example of a physical change because the water changes from liquid to gas but remains H2O.

Tags

NGSS.MS-PS1-4

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

What happens to the chemical composition during a physical change?

Back

The chemical composition remains the same during a physical change; only the form or state changes.

Front

What is an indicator of a chemical change?

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

Tags

NGSS.MS-PS1-2

Front

What is an indicator of a physical change?

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Indicators of a physical change include changes in state (solid, liquid, gas), shape, or size without altering the substance's chemical identity.

Tags

NGSS.MS-PS1-4

Front

Is burning dry leaves a chemical or physical change?

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Burning dry leaves is a chemical change because it produces new substances such as ash and gases.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Front

Is freezing water a chemical or physical change?

Back

Freezing water is a physical change because it changes from liquid to solid without altering its chemical composition.

Tags

NGSS.MS-PS1-4