Chemical Changes and Physical Changes

Which of the following is a sign that a chemical reaction has occurred?

• change in shape

• melting

• formation of a gas

• dissolving

Tags

NGSS.MS-PS1-2

Is melting butter for popcorn a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following is NOT an example of a physical change?

• crumpled paper

• pencil sharpening

• shrunken clothing

• rust

Freezing Juice?

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

A change where one or more new substances are created.

• Physical Change 

• Chemical Change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When you break a cracker into pieces it is a...

• Chemical change

• Physical change

Photosynthesis is an example of a

• physical change

• chemical change

Tags

NGSS.MS-LS1-6

Digesting your food is an example of 

• chemical change

• physical change

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

The melting of wax is an example of a

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which is an example of a chemical reaction?

• paper cut into small pieces

• chocolate melting in a pan

• flour and sugar mixed in a bowl

• cookies baking in an oven

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5