What is the relationship between temperature and volume known as?

The relationship between temperature and volume is known as Charles's Law. This law states that the volume of a gas is directly proportional to its absolute temperature, provided the pressure remains constant. It can be mathematically expressed as V/T = k, where V is the volume, T is the temperature in Kelvin, and k is a constant. This means that as the temperature of the gas increases, its volume also increases, and vice versa, as long as the pressure does not change.

This relationship highlights the behavior of gases under changing thermal conditions, which is fundamental in various applications, from understanding weather patterns to designing engines. The correct identification of this principle as Charles's Law showcases a foundational gas law that is essential for further study in thermodynamics and physical chemistry.