Final answer:
Charles's Law describes the relationship between the volume and temperature of a gas at constant pressure.
Step-by-step explanation:
Charles's Law, named after the French scientist Jacques Alexandre César Charles, describes the relationship between the volume and temperature of a given amount of gas at constant pressure. According to Charles's Law, the volume of a gas is directly proportional to its temperature on the kelvin scale when the pressure is held constant. For example, if the temperature of a gas is increased, its volume will also increase.