A rigid, sealed metal canister has a constant volume and contains a fixed mass of nitrogen gas. The temperature of the gas is increased.
Why does the pressure exerted by the gas on the walls of the canister increase?
The average spacing between the nitrogen molecules increases.
The average speed of the nitrogen molecules increases, leading to more frequent and more forceful collisions with the walls.
The nitrogen molecules expand in size.
The frequency of collisions between the nitrogen molecules and the walls decreases.
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.