Chemical Changes

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

• change in shape
• melting
• formation of a gas
• dissolving

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

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 

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

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

• Chemical change
• Physical change

Which of these is a result of a chemical change?

• A mixture
• A solution
• A new substance
• Melting or freezing

Water freezing

• Chemical Change
• Physical Change

Ice melting

• Chemical Change
• Physical Change

Wood burned in a fireplace

• Chemical Change
• Physical Change