Physical & Chemical States of Matter

What is a chemical change?

• a change in molecules
• a change in matter
• all of the above 
• a change in the size or state of matter

What is a physical change?

• a change in state and mater
• a change in state
• a change in matter

True or false melting ice is a physical change.

• True
• False

Is the picture a physical or chemical change?

• physical change
• chemical change

What is rust?

• a chemical change 
• a physical change

Which describes a physical change?

• blue 
• soft
• gigantic
• all of the above

Is a change of shape a physical or chemical change?

• changes
• matter
• chemical change
• physical change

What causes a physical change?

• tempurature
• motion
• tempureature
• all of the above

How do you know something is a chemical change?

• gas forms
• color changes 
• becomes cold
• only red & orange