According to Charles' Law, how does the volume of gas relate to temperature at constant pressure?

Charles' Law states that at constant pressure, the volume of a gas is directly proportional to its temperature measured in Kelvin. This means that as the temperature of the gas increases, the kinetic energy of the gas molecules also increases, causing them to move more vigorously. As a result, the gas expands and occupies a larger volume. Conversely, when the temperature decreases, the volume of the gas also decreases because the kinetic energy of the molecules lessens, resulting in less movement and contraction of the gas.

Thus, the correct interpretation of Charles' Law is that volume increases with an increase in temperature, provided that pressure remains constant. This relationship is fundamental in understanding how gases behave under varying thermal conditions and is essential for professionals in refrigeration and air conditioning systems.