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2.1 Kinetic particle model of matter

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Question 161

The temperature of the gas in a sealed container of constant volume increases from 15∘C15^\circ\text{C}15∘C to 35∘C35^\circ\text{C}35∘C.

Which row correctly describes the changes in the pressure of the gas and the average speed of the molecules?

A

Pressure: increases; Average speed: increases

B

Pressure: stays the same; Average speed: increases

C

Pressure: decreases; Average speed: decreases

D

Pressure: increases; Average speed: 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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