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2.1 Kinetic particle model of matter

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Question 160

A fixed mass of gas is sealed in a rigid container. The temperature of the gas is decreased.

How does this change affect the average kinetic energy of the gas molecules and the pressure they exert on the walls of the container?

A

Average kinetic energy of molecules decreases; pressure on the walls of the container decreases

B

Average kinetic energy of molecules decreases; pressure on the walls of the container increases

C

Average kinetic energy of molecules stays the same; pressure on the walls of the container decreases

D

Average kinetic energy of molecules increases; pressure on the walls of the container 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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