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2.2 Thermal properties and temperature

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Question 139

A student heats some solid paraffin wax in a beaker until it melts to form liquid wax. The liquid wax is poured into a mold, where it cools and solidifies. Some of the liquid wax left on the hotplate vaporizes to form wax vapor.

Which process involves a net transfer of thermal energy from the wax to the surroundings?

A

melting

B

boiling

C

solidifying

D

vaporizing

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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