Gas - Wikipedia, the free encyclopedia
1 Elemental gases 2 Etymology 3 Physical characteristics 4 Macroscopic 4.1 Pressure 4.2 Temperature 4.3 Specific volume 4.4 Density 5 Microscopic 5.1 Kinetic theory 5.2 Brownian motion 5.3 Intermolecular forces 6 Simplified models 6.1 Ideal and perfect ga...