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 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. Examples include burning, rusting, and baking.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Is melting ice a physical or chemical change?

Back

Melting ice is a physical change.

Tags

NGSS.MS-PS1-4

Front

What happens to the substance during a physical change?

Back

The substance changes shape, form, or appearance but remains the same substance.

Front

Is frying pancakes a physical or chemical change?

Back

Frying pancakes is a chemical change.

Tags

NGSS.MS-PS1-2

Front

What is an example of a physical change?

Back

An example of a physical change is adding sugar to coffee.

Front

What is an example of a chemical change?

Back

An example of a chemical change is baking a cake.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not change the chemical composition of a substance, while chemical changes do.

Tags

NGSS.MS-PS1-4

Front

Can a physical change be reversed?

Back

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

Tags

NGSS.MS-PS1-4

Front

Can a chemical change be reversed?

Back

Most chemical changes cannot be easily reversed.

Tags

NGSS.MS-PS1-5