chemical vs. physical change

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

Freezing Juice?

• Physical Change
• Chemical Change

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Change in color is a physical change.

• True
• False

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties

Ms. Ferguson added 6 g of liquid wax to a cup that weighed 12 g. What is the weight of the cup after the wax solidifies?

• 6 g
• 18 g
• 12 g
• 24 g

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

• Chemical change
• Physical change