It melts to form liquid water. It condenses to form liquid water. It freezes to become heavier ice. It evaporates to become a vapor (gas).
I gave my students this multiple choice question: Heating and cooling water change the state of matter of water. What happens when a block of ice is heated to 10° Celsius?

Only one answer is correct among these 4 choices:
- It melts to form liquid water.
- It condenses to form liquid water.
- It freezes to become heavier ice.
- It evaporates to become a vapor (gas).

Could you tell me which one is correct?

It melts to form liquid water.