A fixed mass of gas is trapped in a cylinder with a piston. The volume of the gas is slowly increased at constant temperature without any particles of gas escaping. Which statement is correct?
The force exerted by the gas on the piston will increase because the particles are hitting the piston more frequently.
The force exerted by the gas on the piston will decrease because the particles move more slowly.
The force exerted by the gas on the piston will decrease because the particles are hitting the piston less frequently.
The force exerted by the gas on the piston will increase because the particles move more quickly.
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.