Here's why:
* Boiling is the process where a liquid changes into a gas when it reaches its boiling point. For water, this point is 100°C (212°F) at standard atmospheric pressure.
* At this temperature, the molecules in the liquid have enough energy to overcome the forces holding them together, allowing them to escape as gas molecules.
Other processes that involve water changing states include:
* Freezing: Liquid water turns into solid ice.
* Melting: Solid ice turns into liquid water.
* Condensation: Water vapor (gas) turns into liquid water.
* Sublimation: Solid ice directly turns into water vapor (gas).
However, only boiling specifically describes the change from liquid to gas at the boiling point.
