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2.2 Thermal properties and temperature

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Question 357

A puddle of water is evaporating on a sunny day. Which statement correctly describes the process of evaporation and how it differs from boiling?

A

Evaporation occurs at any temperature and only from the surface of the liquid, whereas boiling occurs at a specific temperature throughout the liquid.

B

Evaporation occurs only at the boiling point and from the surface of the liquid, whereas boiling occurs at any temperature throughout the liquid.

C

Evaporation occurs at any temperature and throughout the entire volume of the liquid, whereas boiling only occurs at the surface.

D

Both evaporation and boiling only involve molecules with average kinetic energy escaping from the surface of the liquid.

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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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