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2.1.2a Particle structure and motion in solids, liquids and gases

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Question 81

A student heats a solid metal block using an electric heater, resulting in an increase in the temperature of the block.

Which row in the table correctly describes the change in internal energy of the metal block and the correct explanation?

Change in internal energyExplanation
AIncreaseThe average random kinetic energy of the particles increases.
BIncreaseThe individual particles expand and increase in size.
CDecreaseThe potential energy of the particles increases.
DDecreaseThe average random kinetic energy of the particles decreases.
A

Row A

B

Row B

C

Row C

D

Row D

Markscheme

2.1.2a Particle structure and motion in solids, liquids and gases Questions

  1. IGCSE
  2. /Physics
  3. /2.1.2a Particle structure and motion in solids, liquids and gases

151 exam-style questions on CIE IGCSE Physics 2.1.2a Particle structure and motion in solids, liquids and gases. Each one has a worked solution and a mark scheme showing where the marks go.

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