A sealed, rigid metal container contains a gas. The gas and container are initially at room temperature. The gas and container are then heated.
Which row in the table describes the change in the average kinetic energy of the gas molecules and the pressure of the gas as the temperature increases?
| Average kinetic energy of the gas molecules | Pressure of the gas | |
|---|---|---|
| A | increases | increases |
| B | increases | stays the same |
| C | decreases | decreases |
| D | stays the same | increases |
Average kinetic energy increases; pressure increases
Average kinetic energy increases; pressure stays the same
Average kinetic energy decreases; pressure decreases
Average kinetic energy stays the same; pressure increases
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.