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2.2 Thermal properties and temperature

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Question 50

When hand sanitizer is applied to a person's hands, the liquid evaporates, making the skin feel cooler.

Which statement explains this evaporation in terms of particles?

A

The least energetic particles escape from the liquid surface and do not return.

B

The least energetic particles escape from the liquid surface and then return.

C

The most energetic particles escape from the liquid surface and do not return.

D

The most energetic particles escape from the liquid surface and then return.

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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