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The chemical properties of gases and their mixtures

The chemical properties of gases and their mixtures
Gas (gaseous state) (from niderl. gas, dates back to ancient Greek. χάος) is one of four aggregate States of matter characterized by very weak bonds between the constituent particles (molecules, atoms or ions) and their great mobility. Gas particles almost freely and randomly in the intervals between collisions, in which there is a sharp change in the character of their movement. Also, the term "gas" can be defined as a substance whose temperature is equal to or exceeds the critical point, at this temperature the gas compression does not lead to the formation fluid. In this lies the difference between gas and steam. When the pressure saturated steam is partially converted into liquid, gas - no.

Gaseous state of matter in conditions when it is possible the existence of a stable liquid or solid phase of the same substance, usually called steam.

Like liquids, gases have fluidity and resist deformation. Unlike liquids, gases have no fixed volume[1] and do not form a free surface, and tend to fill all available volume (e.g. vessel).

Gaseous state — the most common state of matter in the Universe (interstellar medium, nebulae, stars, atmospheres of planets, etc.). The chemical properties of gases and their mixtures are very diverse — from inactive to inert gases, explosive gas mixtures. The term "gas" is sometimes spread not only on the totality of atoms and molecules, but also on the sum of other elemental [quantum] particle (i.e. quantum) of photons, electrons, Brownian particle and the plasma.