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2.2.3a Melting, boiling, condensation and solidification

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Question 31

During the process of evaporation, a liquid cools down. Which of the following statements correctly explains this cooling effect?

A

The least energetic molecules leave the surface, increasing the average kinetic energy of the remaining molecules.

B

The most energetic molecules leave the surface, decreasing the average kinetic energy of the remaining molecules.

C

The remaining molecules lose kinetic energy as they collide with the walls of the container.

D

The liquid absorbs coldness from the surrounding atmosphere.

Markscheme

2.2.3a Melting, boiling, condensation and solidification Questions

  1. IGCSE
  2. /Physics
  3. /2.2.3a Melting, boiling, condensation and solidification

313 exam-style questions on CIE IGCSE Physics 2.2.3a Melting, boiling, condensation and solidification. Each one has a worked solution and a mark scheme showing where the marks go.

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