Created in the early 17th century, the gas laws have been around to assist scientists in finding volumes, amount, pressures and temperature when coming to matters of gas. The gas laws consist of three primary laws: Charles' Law, Boyle's Law and Avogadro's Law (all of which will later combine into the General Gas Equation and Ideal Gas Law).

Gas laws, laws that relate the pressure, volume, and temperature of a gas. Boyle’s law and Charles’s law can be combined to form the ideal gas law, a single generalization of the behavior of gases known as an equation of state.

The gas laws are a group of laws that govern the behaviour of gases by providing relationships between the following: The volume occupied by the gas. The pressure exerted by a gas on the walls of its container. The absolute temperature of the gas. The amount of gaseous substance (or) the number of moles of gas.

The basic gas laws were discovered by the end of the 18th century when scientists found out that relationships between pressure, volume and temperature of a sample of gas could be obtained which would hold to approximation for all gases. The combination of several empirical gas laws led to the development of the ideal gas law.