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2.2 Thermal properties and temperature

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Question 23

Which statements about the evaporation and boiling of a liquid are correct?

  1. Evaporation can occur at any temperature, whereas boiling occurs only at a specific boiling point.
  2. Both evaporation and boiling occur throughout the entire volume of the liquid.
  3. Evaporation causes the average kinetic energy of the remaining liquid molecules to decrease.
A

1, 2 and 3

B

1 and 3 only

C

1 and 2 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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