The process responsible for changing liquid water into vapor is called evaporation.

Here's a breakdown:

* Evaporation is a physical process where liquid water absorbs enough energy (usually from heat) to overcome the intermolecular forces holding it together.

* As the water molecules gain energy, they move faster and break free from the liquid's surface, becoming individual water molecules in the gaseous state (water vapor).

* This process occurs continuously, even at room temperature, but happens faster when the water is heated or exposed to wind.

Let me know if you'd like more details on how evaporation works!