What are you looking for? Search CLICK HERE TO SEARCH BROWSE POPULAR TOPICS: Dome of the Rock U-boat Intolerable Acts History of the motion picture Plate tectonics See trusted Britannica articles at the top of every search. DOWNLOAD OUR FREE CHROME EXTENSION Behaviour And Properties The enormous number of molecules in even a small volume of a dilute gas produces not complication, as might be expected, but rather simplification. The reason is that ordinarily only statistical averages are observed in the study of the behaviour and properties of gases, and statistical methods are quite accurate when large numbers are involved. Compared to the numbers of molecules involved, there are only a few properties of gases that warrant attention here, namely, pressure, density, temperature, internal energy, viscosity, heat conductivity, and diffusivity. (More subtle properties can be brought into view by ...