What happens to the volume of a gas when the temperature increases, assuming pressure remains constant?

When the temperature of a gas increases while keeping the pressure constant, the volume of the gas expands according to Charles's Law. This fundamental principle of gas behavior states that the volume of a gas is directly proportional to its temperature (measured in Kelvin) when pressure is held constant.

As the temperature rises, the kinetic energy of the gas molecules increases, causing them to move more rapidly. This increased activity leads to greater collisions among the gas molecules and with the walls of the container, resulting in an increase in volume.

This relationship means that if the temperature goes up, the gas must either occupy a larger space or expand to maintain the balance of pressure, thus confirming that the volume increases.