Physical and 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 changing its chemical composition. Examples include melting, freezing, and evaporating.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include burning, rusting, and rotting.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is water evaporation a physical or chemical change?

Back

Water evaporation is a physical change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

Is a rotting pumpkin a physical or chemical change?

Back

A rotting pumpkin is a chemical change.

Tags

NGSS.MS-PS1-2

Front

Is burning wood a physical or chemical change?

Back

Burning wood is a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is shredding paper a physical or chemical change?

Back

Shredding paper is a physical change.

Front

Is boiling water a physical or chemical change?

Back

Boiling water is a physical change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What happens to the substance in a physical change?

Back

In a physical change, the substance may change its form or appearance, but its chemical identity remains the same.

Front

What happens to the substance in a chemical change?

Back

In a chemical change, the substance transforms into one or more new substances with different properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Can physical changes be reversed?

Back

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

Tags

NGSS.MS-PS1-4