A student investigates the relationship between the temperature of a gas and its volume at constant pressure. She records her results in the table.
| Reading | Temperature / TTT / K\text{K}K | Volume / VVV / cm3\text{cm}^3cm3 |
|---|---|---|
| 1 | 300 | 60 |
| 2 | 200 | 40 |
| 3 | 350 | 70 |
| 4 | 250 | 50 |
What is the correct conclusion from the experiment?
The volume increases when the temperature increases.
The volume decreases when the temperature increases.
The volume is independent of the temperature.
The volume initially decreases when the temperature increases, but then 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.