Which row correctly compares the average separation and the average speed of the molecules of a cool liquid with those of a hot gas?
| Average separation | Average speed | |
|---|---|---|
| A | smaller for the liquid | slower for the liquid |
| B | smaller for the liquid | faster for the liquid |
| C | greater for the liquid | slower for the liquid |
| D | greater for the liquid | faster for the liquid |
Row A
Row B
Row C
Row D
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.