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2.1 Kinetic particle model of matter

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Question 107

A fixed mass of gas is trapped in a cylinder with a movable piston.

The volume of the gas is decreased, but the temperature of the gas is kept constant.

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

A

Average kinetic energy stays the same; pressure increases

B

Average kinetic energy increases; pressure increases

C

Average kinetic energy stays the same; pressure decreases

D

Average kinetic energy decreases; pressure stays the same

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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