A sealed, rigid container contains a fixed mass of gas.
Which statement about the gas in the container is correct when its temperature increases?
The average kinetic energy of the gas molecules increases.
The average distance between the gas molecules increases.
The frequency of collisions between the gas molecules and the container walls decreases.
The pressure 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.