How do I explain what an ideal gas is very simply?

Question

anonymous · Answer

And also, what the ideal gas law explains?

mani_jha · Answer

An ideal gas is, simply, a gas which obeys Boyle's Law, Charles' Law at all temperatures and pressures.
The ideal gas law states that for an ideal gas:
PV=nRT
or, PV/nT=R
Since R

mani_jha · Answer

Since R is a universal constant, PV/nT is always the same for any ideal gas under any condition

anonymous · Answer

An ideal gas is a theoretical gas composed of a set of randomly-moving, non-interacting point particles. The ideal gas concept is useful because it obeys the ideal gas law, a simplified equation of state, and is amenable to analysis under statistical mechanics.

At normal conditions such as standard temperature and pressure, most real gases behave qualitatively like an ideal gas. Many gases such as air, 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 density (i.e. lower pressure), as the work performed by 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.