Here’s a simple explanation:
Effect of Temperature on Gas Volume:
- When the temperature of a gas increases, the kinetic energy of its particles increases, so they move faster and push the container walls more.
- If the pressure is kept constant, the gas expands, meaning its volume increases.
- Conversely, when the temperature decreases, particles move slower, and the volume decreases.
This relationship is summarized by Charles’s Law:
At constant pressure, the volume of a gas is directly proportional to its absolute temperature.
Example:
- Heating a hot-air balloon causes the air inside to expand, making the balloon rise.
- Cooling a gas in a balloon makes it shrink.