What does the change of state from gas to liquid exemplify?

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

Answer: (A)

The transition from a gas to a liquid is known as condensation. This process occurs when gas molecules lose energy and come together, resulting in the formation of liquid. An everyday example of condensation is when you see water droplets forming on the outside of a cold glass. This happens because the water vapor in the air cools down upon contact with the cold surface of the glass, causing it to change from its gaseous state to a liquid state.

Understanding this process is crucial in various contexts, including meteorology, HVAC systems, and even in understanding laboratory procedures where gases are often condensed for collection or further processing. Knowing this helps in effectively handling situations involving hazardous materials, where controlling states of matter can be vital for safety and efficiency.