Which of the following best describes what happens during the phase change of condensation?

• A. A gas transforms into a liquid as it loses energy.
• B. A liquid transforms into a gas as it gains energy.
• C. A liquid transforms into a solid as it loses energy.
• D. A solid transforms directly into a gas without passing through the liquid phase.

Answer: (A)

Verified step by step guidance

1. Understand that condensation is a phase change involving a transition between states of matter.
2. Recall that condensation specifically refers to the process where a substance changes from the gas phase to the liquid phase.
3. Recognize that during condensation, the gas particles lose energy, which causes them to slow down and come closer together, forming a liquid.
4. Contrast condensation with other phase changes: vaporization (liquid to gas), freezing (liquid to solid), and sublimation (solid to gas).
5. Conclude that the best description of condensation is: 'A gas transforms into a liquid as it loses energy.'