A rigid container of constant volume contains a fixed mass of gas. The gas is heated. What happens to the pressure of the gas and what happens to the average kinetic energy of the gas molecules?
Pressure decreases; average kinetic energy decreases
Pressure decreases; average kinetic energy increases
Pressure increases; average kinetic energy decreases
Pressure increases; average kinetic energy increases
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.