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2.1 Kinetic particle model of matter

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Question 116

Air is trapped in a cylinder by a piston.

The piston is pulled outwards, so the volume of the air increases.

The temperature of the air stays the same.

Which row describes how the average speed of the air molecules and the average distance between them changes?

A

Average speed: increases; Average distance: increases

B

Average speed: unchanged; Average distance: increases

C

Average speed: unchanged; Average distance: decreases

D

Average speed: decreases; Average distance: decreases

Markscheme

2.1 Kinetic particle model of matter Questions

  1. IGCSE
  2. /Physics
  3. /2.1 Kinetic particle model of matter

321 exam-style questions on CIE IGCSE Physics 2.1 Kinetic particle model of matter, covering 2.1.1 States of matter and changes of state, 2.1.2a Particle structure and motion in solids, liquids and gases, 2.1.2b Gas pressure and particle collisions, 2.1.2c Brownian motion, 2.1.3a The absolute scale of temperature, and 2.1.3b Pressure, volume and temperature of a gas. Each one has a worked solution and a mark scheme showing where the marks go.

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