Explain, in terms of the behavior of molecules, why heating a gas in a sealed container of fixed volume causes the pressure on the walls of the container to increase.
Complete the following two sentences.
(i) At constant pressure, the volume of a gas increases as its temperature __________.
(ii) At constant temperature, the volume of a gas increases as its pressure __________.
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.