Which term describes heat transfer during vaporization?

• A. Sublimation
• B. Deposition
• C. Vaporization
• D. Condensation

Answer: (C)

Vaporization is the process by which a liquid becomes a gas, and it requires energy input. The heat added to drive this change is called the latent heat of vaporization, an endothermic transfer that supplies the energy needed to overcome intermolecular forces and allow molecules to escape into the gas phase. Sublimation is solid to gas, deposition is gas to solid, and condensation is gas to liquid, each involving different phase changes and heat flow directions.