Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: If water gets hot enough, it starts to boil. Bubbles of water vapor form in boiling water. This happens as particles of liquid water gain enough energy to completely overcome the force of attraction between them and change to the gaseous state. The bubbles rise through the water and escape from the pot as steam. Answer: it boils
Solution:
When water particles become hot enough to overcome the force of attraction between them, what happens to the water?