What is the change of state from a gas to a liquid called?

• A. Condensation
• B. Freezing
• C. Changes of state
• D. Measuring cylinder

Answer: (A)

Condensation is the change of state from a gas to a liquid. It happens when a substance loses energy, so the particles move more slowly and get close enough to form intermolecular bonds that give the liquid shape and flow. You can see it in everyday life when water vapor in the air cools on a cold surface and forms droplets, like on a chilly bathroom mirror or a misty window.

This is different from freezing, which is the reverse where a liquid becomes a solid. And “changes of state” is a broad label for any transition (solid to liquid, liquid to gas, etc.), not the specific gas-to-liquid direction here. A measuring cylinder is just a piece of equipment, not a phase-change process.