A liquid in a hydraulic system changes volume much less than a gas when pressure is applied. Which statement explains why?
The particles in a liquid move faster than gas particles, so they resist being pushed together.
The particles in a liquid are already in contact, so there is almost no space to remove.
The particles in a liquid spread further apart when the pressure increases.
The particles in a liquid are fixed in place, so they cannot be rearranged by pressure.
108 exam-style questions on Edexcel GCSE Physics 14.3 Gas pressure and temperature, covering 14.3.1 Gas pressure and particle motion, 14.3.2 Temperature and pressure at constant volume, 14.3.3 Absolute zero and the kelvin scale, 14.3.4 Compressing and expanding gases, 14.3.5 Volume and pressure at constant temperature, and 14.3.6 Doing work on a gas. Each one has a worked solution and a mark scheme showing where the marks go.