This simulation provides the ability to change the conditions (pressure, volume, temperature and number of moles of gas) of ideal gases, determine their relationships, and observe how the change affects the behavior of gas particles. The postulates of the Kinetic Molecular Theory are illustrated at the particulate level of matter.All of the Gas Laws can be investigated: Boyle's Law, Charles' law, Amonton's Law, Dalton's Law of Partial Pressure, and Graham's Law.