Which if the following defines the term evaporation?

• A. The conversion of a liquid into a vapor.
• B. The conversion of a solid into a vapor.
• C. The conversion of a vapor into a liquid.
• D. The conversion of a vapor into a solid.

Answer: (A)

Verified step by step guidance

1. Identify the process being described: evaporation.
2. Understand that evaporation involves a phase change from liquid to vapor.
3. Recognize that evaporation is a surface phenomenon where molecules at the surface of a liquid gain enough energy to enter the gaseous phase.
4. Differentiate evaporation from other phase changes such as sublimation (solid to vapor), condensation (vapor to liquid), and deposition (vapor to solid).
5. Select the definition that matches the process of evaporation: 'The conversion of a liquid into a vapor.'