Chemical Changes

which one is not an indicator of a chemical change

• formation of gas

• formation of a solid

• formation of liquid

• change of colour

• change in temperature

what is a physical change

• its when a transformation doesn't change the nature of the molecules in matter

• its when a transformation change the nature of the molecules in matter

• its when a transformation change the nature of the molecules in substance

1. Sugar dissolves in warm water
 
 

• Physical change

• Chemical Change

2. A nail rusts.
 

•  Physical Change

• Chemical Change

4. A piece of paper burns. 
 

• Physical Change

•  Chemical Change

Is melting butter for popcorn a chemical or physical change?

• chemical

• physical

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

• change in shape

• melting

• formation of a gas

• dissolving

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

• crumpled paper

• pencil sharpening

• shrunken clothing

• rust

Change in color is a physical change.

• True

• False

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

• Chemical change

• Physical change