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2.2.3a Melting, boiling, condensation and solidification

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Question 247

During evaporation, the temperature of a liquid decreases. Which statement correctly explains why the temperature of the remaining liquid falls?

A

The molecules with the lowest kinetic energy escape first, increasing the temperature of the escaping vapor.

B

The average spacing between the remaining molecules increases, which reduces their temperature.

C

The most energetic molecules escape from the liquid surface, reducing the average kinetic energy of the remaining molecules.

D

The escaping molecules perform work on the atmosphere, which cools the liquid.

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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