Why is a liquid much more difficult to compress than a gas?
The particles in a liquid are much closer together than in a gas.
The particles in a liquid are much larger than in a gas.
The particles in a liquid are stationary.
The volume of individual particles in a liquid is easily reduced.
151 exam-style questions on CIE IGCSE Physics 2.1.2a Particle structure and motion in solids, liquids and gases. Each one has a worked solution and a mark scheme showing where the marks go.