Physical vs Chemical Changes

Front

What is a chemical change?

Back

A chemical change is a process where one or more new substances are formed, indicating a change in the chemical composition.

Tags

NGSS.MS-PS1-2

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

Give an example of a physical change.

Back

Cutting hair is an example of a physical change.

Front

Give an example of a chemical change.

Back

Silverware tarnishing is an example of a chemical change.

Tags

NGSS.MS-PS1-2

Front

What happens during a chemical reaction between sodium and chlorine?

Back

A new compound is formed — salt.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not create new substances, while a chemical change results in the formation of new substances.

Tags

NGSS.MS-PS1-4

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change.

Tags

NGSS.MS-PS1-4

Front

Is rusting of iron a physical or chemical change?

Back

Rusting of iron is a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a reversible physical change?

Back

Freezing and melting of water is an example of a reversible physical change.

Tags

NGSS.MS-PS1-4

Front

What is an example of an irreversible chemical change?

Back

Burning wood is an example of an irreversible chemical change.

Tags

NGSS.MS-PS1-5