A fixed mass of gas is trapped inside a cylinder fitted with a moveable piston. The piston is slowly pulled out.
What happens to the pressure and the volume of the trapped gas?
Pressure decreases, Volume increases
Pressure decreases, Volume decreases
Pressure increases, Volume increases
Pressure increases, Volume does not change
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.