<P> At normal conditions such as standard temperature and pressure , most real gases behave qualitatively like an ideal gas . Many gases such as nitrogen , oxygen , hydrogen , noble gases , and some heavier gases like carbon dioxide can be treated like ideal gases within reasonable tolerances . Generally , a gas behaves more like an ideal gas at higher temperature and lower pressure , as the potential energy due to intermolecular forces becomes less significant compared with the particles ' kinetic energy , and the size of the molecules becomes less significant compared to the empty space between them . </P>
when do real gases act like ideal gases
At normal conditions such as standard temperature and pressure