What occurs when a liquid changes to gas through evaporation?

When a liquid changes to gas through evaporation, the process involves the molecules of the liquid gaining energy and transitioning into a gaseous state. This occurs as some molecules at the surface of the liquid absorb enough heat energy to break their bonds and escape into the air.

During this process, the remaining liquid loses some of its energy, which can lead to a decrease in temperature. This cooling effect is why the correct answer is that the liquid becomes chilled.

In contrast, when considering other options: temperature might increase if heat is consistently added to the liquid, pressure does not necessarily stabilize because it can fluctuate based on the amount of vapor produced, and humidity increases in the surrounding atmosphere due to the water vapor released during evaporation. Thus, the concept of the liquid becoming chilled captures the essential thermodynamic principle at play during evaporation.