Editing Perfect gas (section)

{{Short description|Theoretical gas model}}
In [[physics]], [[engineering]], and [[physical chemistry]], a '''perfect gas''' is a theoretical gas model that differs from real gases in specific ways that makes certain calculations easier to handle. In all perfect gas models, intermolecular forces are neglected. This means that one can neglect many complications that may arise from the [[Van der Waals force]]s. All perfect gas models are [[ideal gas]] models in the sense that they all follow the ideal gas [[equation of state]]. However, the idea of a perfect gas model is often invoked as a combination of the ideal gas equation of state with specific additional assumptions regarding the variation (or nonvariation) of the [[heat capacity]] with temperature.