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2.2.3a Melting, boiling, condensation and solidification

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Question 92

Which statement correctly explains why evaporation causes the temperature of a liquid to decrease?

A

Only the least energetic molecules escape from the surface of the liquid.

B

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

C

Molecules absorb thermal energy and escape from both the surface and deep within the liquid.

D

The liquid undergoes an endothermic chemical reaction during evaporation that absorbs heat.

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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