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2.1 Kinetic particle model of matter

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Question 184

The plunger of a sealed syringe containing a fixed mass of air is pulled outwards, increasing the volume of the trapped air.

The temperature of the air inside the syringe remains constant.

How does the air pressure inside the syringe change and why?

A

decreases because air molecules strike the walls of the syringe less frequently

B

decreases because air molecules move more slowly

C

increases because air molecules strike the walls of the syringe more frequently

D

increases because air molecules move more quickly

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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