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2.2.3a Melting, boiling, condensation and solidification

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Question 44
a.

State three factors that affect the rate of evaporation of a liquid.

  1. .....................................................................................................

  2. .....................................................................................................

  3. .....................................................................................................

[3]
b.

After a strenuous workout, a runner's skin is covered in sweat. Explain, in terms of molecules and heat transfer, why the evaporation of sweat helps to cool the runner's body.

[4]
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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