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2.2 Thermal properties and temperature

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Question 23

Which statements about the evaporation of a liquid are correct?

  1. Evaporation is accompanied by a decrease in the average kinetic energy of the remaining molecules.
  2. Increasing the wind speed over the surface of a liquid decreases the rate of evaporation.
  3. Evaporation takes place only at the surface of the liquid.
A

1, 2 and 3

B

1 and 2 only

C

1 and 3 only

D

2 and 3 only

Markscheme

2.2 Thermal properties and temperature Questions

  1. IGCSE
  2. /Physics
  3. /2.2 Thermal properties and temperature

528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.

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