Gas

One of the four fundamental states of matter
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alias
gaseous matter
defining formula
PV=nRT
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Dewey Decimal Classification
530.43
Commons category
Gases
Wikipedia creation date
7/27/2001
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Wikipedia opening text
Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide). A gas mixture, such as air, contains a variety of pure gases. What distinguishes a gas from liquids and solids is the vast separation of the individual gas particles. This separation usually makes a colorless gas invisible to the human observer. The interaction of gas particles in the presence of electric and gravitational fields are considered[by whom?] negligible, as indicated by the constant velocity vectors in the image. The gaseous state of matter occurs between the liquid and plasma states, the latter of which provides the upper temperature boundary for gases. Bounding the lower end of the temperature scale lie degenerative quantum gases which are gaining increasing attention. High-density atomic gases super-cooled to very low temperatures are classified by their statistical behavior as either Bose gases or Fermi gases. For a comprehensive listing of these exotic states of matter see list of states of matter.
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Gaseous state
Gaseous phase
Gaseous
Atomic Gas
Atomic gases
Atomic gas
Gases
Gas State
Gas state
Gaseous State
Organic gas
Gas-phase
Gas distribution
Gasses
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