Chemical & Physical changes

Can a same substance undergo both physical and chemical changes.

• True
• False

How do we know if it is a chemical change?

• can be undone
• cannot be undone
• both
• none

Physical changes size and shape of something?

• False
• True

Ice can be a physical change?

• False
• True

When something new is created or a substance is broken down into diffrent chemicals, you have a chemical change.

• True
• False

What is photosynthesis?

• when energy is expose. 
• when water and oxygen is composed.
• when plants turn carbon dioxide and water into energy. 
• none

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

• physical properties
• chemical properties
• liquid properties
• real properties

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

• chemical
• physical

Is burning wood a chemical or physical change?

• chemical
• physical

Which is a physical change?

• burning match 
• vinegar in baking soda 
• melting butter
• cooking an egg