A fixed mass of gas at a constant temperature is trapped in a cylinder which has a movable piston.
Which row states and explains what happens to the pressure of the gas in the cylinder when the volume of the gas decreases?
| Pressure of the gas | Explanation | |
|---|---|---|
| A | decreases | gas particles collide with the cylinder less frequently |
| B | decreases | gas particles collide with the cylinder at a lower speed |
| C | increases | gas particles collide with the cylinder at a higher speed |
| D | increases | gas particles collide with the cylinder more frequently |
A
B
C
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.