What temperature indicates the change of a liquid into a solid?

The temperature at which a liquid transforms into a solid is known as the freezing point. During this process, the particles within the liquid lose energy and begin to arrange themselves into a fixed structure, which is characteristic of solids. This transition occurs at a specific temperature that is unique to each substance under standard atmospheric conditions.

While the melting point might seem related, it actually refers to the temperature at which a solid becomes a liquid. The freezing point and melting point typically occur at the same temperature for a given substance, but the context of the change is crucial. In the case of a liquid turning into a solid, specifically when discussing the transition from the liquid phase to the solid phase, freezing point is the correct term to use.