Physical and Chemical Changes

Melting a chocolate bar?

• Physical Change

• Chemical Change 

Tags

NGSS.MS-PS1-2

A change that does not result in a new substance.

• Physical Change

• Chemical Change 

Tags

NGSS.MS-PS1-4

A teacher is demonstrating physical and chemical changes to her class. Which action should she use to demonstrate a chemical change?

• cutting a piece of paper

• folding a piece of paper

• tearing a piece of paper

• burning a piece of paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A physical change...

• changes the physical properties of an object, but does not create a new substance.

• creates a new substance and cannot be undone.

A chemical change

• changes the physical properties of an object, but does not create a new substance.

• creates a new substance and cannot be undone.

Wood that is burning in a brush pile has heat, and produces ashes.

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this an example of a physical or chemical change? 

• Physical because it is a mixture.

• Chemical because the parts have changed shape.

Tags

NGSS.MS-PS1-2

Freezing Juice?

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS3-5

Exploding Fireworks?

• Physical Change 

• Chemical Change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Rotting bananas?

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5