Which term is the change from a gas to a liquid?

Which term is the change from a gas to a liquid?

• A. Vaporization
• B. Conduction
• C. Condensation
• D. Convection

Answer: (C)

Gas to liquid is condensation. When a gas cools (or is compressed), its molecules move more slowly and the intermolecular forces pull them together until they form a liquid. In this process energy is released to the surroundings, which is why condensation is often described as the release of latent heat. Vaporization, by contrast, is the change from liquid to gas. Conduction and convection are methods of heat transfer, not changes in state. A familiar example is dew forming on grass in the morning, where water vapor in the air condenses into liquid droplets.

Gas to liquid is condensation. When a gas cools (or is compressed), its molecules move more slowly and the intermolecular forces pull them together until they form a liquid. In this process energy is released to the surroundings, which is why condensation is often described as the release of latent heat. Vaporization, by contrast, is the change from liquid to gas. Conduction and convection are methods of heat transfer, not changes in state. A familiar example is dew forming on grass in the morning, where water vapor in the air condenses into liquid droplets.