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2.2 Thermal properties and temperature

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Question 55

Liquid water at 100∘C100^\circ\text{C}100∘C boils to form steam at 100∘C100^\circ\text{C}100∘C.

What happens to the average separation and the average speed of the water molecules?

A

Average separation decreases; average speed decreases

B

Average separation decreases; average speed remains the same

C

Average separation increases; average speed decreases

D

Average separation increases; average speed remains the same

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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