Physical and Chemical Changes

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What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into different substances with distinct properties, often involving a chemical reaction.

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

Is burning wood a chemical or physical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is frying an egg a chemical or physical change?

Back

Chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is glass breaking a chemical or physical change?

Back

Physical change.

Front

What is an example of a chemical property?

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Flammability.

Front

What is an example of a physical change?

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Melting ice.

Tags

NGSS.MS-PS1-4

Front

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

Back

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What happens to the physical properties of a substance during a physical change?

Back

The physical properties may change, but the chemical composition remains the same.

Tags

NGSS.MS-PS1-4

Front

Can a physical change be reversed?

Back

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