A rigid aerosol canister is left in hot direct sunlight, causing the temperature and pressure of the gas inside to increase. The volume of the canister remains unchanged.
Which row in the table explains the increase in pressure in terms of the movement of the gas particles?
| Average kinetic energy of gas particles | Frequency of collisions between gas particles and inside surface of canister | |
|---|---|---|
| A | increased | increased |
| B | increased | unchanged |
| C | unchanged | increased |
| D | unchanged | unchanged |
Average kinetic energy: increased; Frequency of collisions: increased
Average kinetic energy: increased; Frequency of collisions: unchanged
Average kinetic energy: unchanged; Frequency of collisions: increased
Average kinetic energy: unchanged; Frequency of collisions: unchanged
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.