Science quiz 7

What happens when you heat crayons?

• A: they will freeze
• B: they will change from liquid to solid
• C: they will change from solid to liquid

Which material will freeze when you cool it?

• A: a plastic juice carton
• B: juice in a glass
• C: a glass juice bottle

When an ice cube sits in the sun, it becomes

• A: solid
• B: liquid
• C: gas

What kind of change occurs when you freeze water?

• A: an irreversible change
• B: a reversible change

What kind of change occurs when you melt chocolate?

• A: an irreversible change
• B: a reversible change

What kind of change occurs when you cook eggs?

• A: an irreversible change
• B: a reversible change

What kind of change occurs when you bake cookies?

• A: an irreversible change
• B: a reversible change

What kind of change occurs when you burn toast?

• A: an irreversible change
• B: a reversible change

What kind of change occurs when you boil rice?

• A: an irreversible change
• B: a reversible change

What kind of change occurs when you melt wax?

• A: an irreversible change
• B: a reversible change