A rigid, sealed metal cylinder contains a fixed mass of gas.
The temperature of the gas is decreased.
Which statement about the gas in the cylinder is correct?
The average speed of the gas molecules decreases.
The pressure of the gas increases.
The molecules collide with the inside walls of the cylinder more frequently.
The volume of the gas 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.