What term describes the temperature at which heat removal initiates a phase change from vapor to liquid?

The temperature at which heat removal initiates a phase change from vapor to liquid is known as the condensation point. This term specifically refers to the process where vapor (gas) loses heat energy, resulting in the molecules coming together and transforming into a liquid state. This process is essential in refrigeration and air conditioning systems, where removing heat from the refrigerant allows it to change phase from gas to liquid, facilitating the cooling process.

While other terms might seem relevant, they refer to different phase changes or conditions. The freezing point, for example, marks the temperature at which a liquid becomes solid, and the vaporization point refers to the temperature at which a liquid changes to a gas. The boiling point, similar to vaporization point, describes the temperature at which a liquid transitions to a vapor under certain atmospheric pressure conditions. Thus, understanding the term "condensation point" is crucial for effective operation and comprehension of air conditioning and refrigeration systems.