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 rearrangement of atoms.

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

Front

What is an example of a chemical change?

Back

Burning wood, which produces ash and smoke, is an example of a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a physical change?

Back

Evaporating water is an example of a physical change.

Tags

NGSS.MS-PS3-4

Front

True or False: A physical change may produce a new substance.

Back

False. A physical change does not produce a new substance.

Front

What evidence indicates a chemical change has occurred?

Back

Evidence of a chemical change includes color change, gas production, formation of a precipitate, or temperature change.

Tags

NGSS.MS-PS1-2

Front

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

Back

A physical change does not alter the chemical composition of a substance, while a chemical change results in new substances being formed.

Tags

NGSS.MS-PS1-4

Front

Can breaking a pencil be considered a chemical change?

Back

No, breaking a pencil is a physical change because it does not change the chemical composition of the material.

Tags

NGSS.MS-PS1-2

Front

What happens to the molecules during a physical change?

Back

During a physical change, the arrangement of molecules may change, but their chemical structure remains the same.

Tags

NGSS.MS-PS1-4