What does Charles's Law state about gases?

Charles's Law describes the relationship between the volume of a gas and its temperature when the pressure is held constant. It states that the volume of a gas is directly proportional to its absolute temperature (measured in Kelvin). This means that if the temperature of a gas increases, the volume will also increase, provided the pressure does not change. For instance, if you heat a balloon, the gas inside expands, causing the balloon to inflate. Conversely, if the balloon is cooled, the gas contracts, and the volume decreases.

This direct proportionality can be represented mathematically as V = kT, where V is volume, T is absolute temperature, and k is a constant depending on the amount of gas and the pressure. This fundamental concept helps to explain various real-world phenomena and is crucial for understanding the behavior of gases under different temperature conditions.