Condensation is a process through which a gas becomes a ________.

• A. solid
• B. solution
• C. plasma
• D. liquid

Answer: (D)

Verified step by step guidance

1. Understand the definition of condensation: it is the process where a gas changes its phase to become a liquid.
2. Recall the states of matter: solid, liquid, gas, plasma, and solution (which is a mixture, not a state of matter).
3. Recognize that condensation involves the removal of heat from a gas, causing gas particles to lose energy and come closer together.
4. This decrease in energy allows the gas particles to transition into the liquid phase, where particles are more closely packed but still able to move.
5. Therefore, condensation is the process through which a gas becomes a liquid.