Which process involves a liquid transitioning into a solid?

The correct process involving a liquid transitioning into a solid is freezing. During freezing, the temperature of a liquid decreases, which causes the molecules to lose energy and become more ordered. As the molecules come closer together, they form a structured arrangement characteristic of solids. This process is commonly observed when water turns into ice as it reaches its freezing point.

Melting, on the other hand, is the process where a solid becomes a liquid, which is the opposite of freezing. Condensation refers to the change from gas to liquid, and evaporation is the transition from liquid to gas. Understanding these definitions helps clarify the unique characteristics and phase changes of matter.