Which term describes the change of state from vapor to liquid?

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

Answer: (C)

Condensation is the change of state from vapor to liquid, occurring when a gas loses enough energy that its molecules slow down and clump together into a liquid. It is the reverse of vaporization, which is liquid turning into a gas. Sublimation (solid to gas) and deposition (gas to solid) are different phase changes, so they don’t describe this process. You can see condensation in everyday examples like dew forming on grass or fog on a cold window, and it’s a key concept in hazardous materials work because cooler surfaces can cause vapors to condense, influencing how you assess vapor hazards and ventilation needs. Condensation.