Physical and Chemical Change

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-PS1-4

NGSS.MS-PS3-4

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

• crumpled paper
• pencil sharpening
• shrunken clothing
• rust

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Change in color is a physical change.

• True
• False

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Rust on an iron bar is an example of chemical change.

• True 
• False

Tags

NGSS.MS-PS1-2

A mixture is the result of a physical change because...

• The parts can be separated
• A new substance is made
• There is a chemical reaction
• One part of the mixture disappears

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

 

Which is an example of a physical

change?

• a candle burning

• baking a cake

• evaporating water

• metal rusting