Advanced Unit 3 Test Review

Baking Cookies

• Physical Change

• Chemical Change

Melting Ice Cream

• Physical Change

• Chemical Change

Blowing up a balloon

• Physical Change

• Chemical Change

Rotting banana

• Physical Change

• Chemical Change

What happens when a new substance is produced during a reaction?

• chemical change

• physical change

rusty nail

• chemical change

• physical change

Is this equation balanced?

• yes
• no
• Not enough information

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

• Yes
• No

Balance this equation
_N₂ + _H₂ --> _NH₃

• 1,2,3
• 1,3,2
• 1,1,2
• 2,1,1

What does the Law of Conservation of Mass state?

• Matter cannot be gained or lost in a chemical reaction.
• Matter can only be lost in a chemical reaction.
• Matter can only be gained in a chemical reaction.
• Matter can be gained and lost in a chemical reaction.