Which statement best explains why a liquid is extremely difficult to compress into a smaller volume compared to a gas?
The particles in a liquid are already very close together with very little empty space between them.
The particles in a liquid are held in fixed, rigid positions.
The forces of attraction between particles in a liquid are completely negligible.
The individual particles in a liquid easily shrink when pressure is applied.
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.