The volume of a gas in a sealed cylinder with a movable piston is decreased. The temperature of the gas is kept constant.
What has happened to the behavior of the gas molecules in the cylinder after this change?
They move with a higher average speed.
They move with a lower average speed.
They collide with the walls of the container more frequently.
They collide with the walls of the container less frequently.
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.