A sample of gas is sealed inside a container. The volume of the container is decreased while the temperature of the gas is kept constant.
Which statement explains why the pressure of the gas increases?
The average speed of the gas particles increases.
The gas particles collide with the walls of the container more frequently.
The mass of each gas particle increases.
The average force of each individual collision increases.
126 exam-style questions on CIE IGCSE Physics 2.1.3a The absolute scale of temperature. Each one has a worked solution and a mark scheme showing where the marks go.