*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. Examples include melting, freezing, and dissolving.

Tags

NGSS.MS-PS1-4

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and the rearrangement of atoms. Examples include burning, rusting, and digestion.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Identify the following as physical (P) or chemical (C) change: Sugar dissolves in water.

Back

P

Front

Identify the following as a physical property (P) or chemical (C): luster.

Back

P

Front

Identify the following as a physical property (P) or chemical (C): blue color.

Back

P

Front

Identify the following as physical (P) or chemical (C) change: A tree burns to form ashes.

Back

C

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is an example of a physical change?

Back

An example of a physical change is ice melting into water.

Tags

NGSS.MS-PS1-4

Front

What is an example of a chemical change?

Back

An example of a chemical change is iron rusting when exposed to oxygen and moisture.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What happens to the molecules during a physical change?

Back

During a physical change, the molecules may change their arrangement or state (solid, liquid, gas) but their chemical structure remains the same.

Tags

NGSS.MS-PS1-4

Front

What happens to the molecules during a chemical change?

Back

During a chemical change, the molecules rearrange to form new substances with different chemical properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5