What happens to the volume of a gas as the temperature increases?

As temperature increases, the volume of a gas also increases, provided that the pressure remains constant. This behavior is described by Charles's Law, which states that for a fixed amount of gas at constant pressure, the volume is directly proportional to its absolute temperature.

When the temperature rises, gas molecules gain kinetic energy and move faster. This increase in molecular motion causes the gas to expand, resulting in a larger volume. The relationship can be mathematically represented as V1/T1 = V2/T2, indicating that as temperature (T) increases, volume (V) must also increase to maintain the equality. This is why, under conditions of constant pressure, the correct understanding is that the volume increases with temperature.