- Boiling means matter / a substance changes from a liquid into a gas by increasing heat energy
- Water is a kind of substance
- Water is in a boiling process
- Therefore, the heat energy of water is increasing

- The heat energy of water is increasing
- Temperature is a measure of heat energy
- So, the temperature of water is increasing

- The temperature of water is increasing
- Water is a kind of substance
- As the temperature of a substance increases , the molecules in that substance will move faster and farther apart
- Therefore, the water molecules will move faster and farther apart

So, the water molecules will move faster and farther apart
Question: What happens to water molecules during the boiling process?
Context: - Boiling means matter / a substance changes from a liquid into a gas by increasing heat energy 
- Water is a kind of substance 
- Water is in a boiling process 
- As the temperature of a substance increases , the molecules in that substance will move faster and farther apart 
- Temperature is a measure of heat energy