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

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Question 58

A student investigates the decrease in temperature of a solid metal block after it is removed from a heater.

Which row correctly describes the change in internal energy and the explanation for this change?

A

Change in internal energy: decrease | Explanation: The random kinetic energy of the atoms decreases.

B

Change in internal energy: decrease | Explanation: The metal block changes state and melts.

C

Change in internal energy: increase | Explanation: The potential energy of the atoms increases.

D

Change in internal energy: increase | Explanation: The average speed of the atoms increases.

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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