Gases

Acetylene (systematic name: ethyne) is the chemical compound with the formula C2H2.

Adsorption is the adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid to a surface.

Boiling is the rapid vaporization of a liquid, which occurs when a liquid is heated to its boiling point, the temperature at which the vapor pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.

("Towngas" redirects here. Towngas may also refer to the brand name of The Hong Kong and China Gas Company.) Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system.

A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels.

Dew point is the highest temperature at which airborne water vapor will condense to form liquid dew.

A greenhouse gas (abbrev. GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range.

In statistics the Maxwell–Boltzmann distribution is a particular probability distribution named after James Clerk Maxwell and Ludwig Boltzmann.

Plasma (from Greek πλάσμα, "anything formed") is one of the four fundamental states of matter, the others being solid, liquid, and gas.

Propene, also known as propylene or methyl ethylene, is an unsaturated organic compound having the chemical formula C3H6.

Standard conditions for temperature and pressure are standard sets of conditions for experimental measurements to be established to allow comparisons to be made between different sets of data.

Tear gas, formally known as a lachrymatory agent or lachrymator (from the Latin lacrima, meaning "tear"), is a chemical weapon that causes severe eye, respiratory, and skin irritation, pain, vomiting, and even blindness.

Vacuum is space void of matter.

Vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system.

In physics a vapor (American English spelling) or vapour (British) is a substance in the gas phase at a temperature lower than its critical temperature, which means that the vapor can be condensed to a liquid by increasing the pressure on it without reducing the temperature.

Carbon monoxide poisoning occurs after too much inhalation of carbon monoxide (CO).

A phase diagram in physical chemistry, engineering, mineralogy, and materials science is a type of chart used to show conditions (pressure, temperature, volume, etc.) at which thermodynamically distinct phases occur and coexist at equilibrium.

Silane is an inorganic compound with chemical formula, SiH4, making it a group 14 hydride.

Syngas, or synthesis gas, is a fuel gas mixture consisting primarily of hydrogen, carbon monoxide, and very often some carbon dioxide.

In chemistry, absorption is a physical or chemical phenomenon or a process in which atoms, molecules or ions enter some bulk phase – gas, liquid or solid material.

Clathrate hydrates, or gas clathrates, gas hydrates, clathrates, hydrates, etc.

Diacetylene (also known as butadiyne) is the organic compound with the formula (C2H)2.

Chlorotrifluorosilane is an organic gaseous compound with formula SiClF3 composed of silicon, fluorine and chlorine.

Arsine is an inorganic compound with the formula AsH3.

Biogas typically refers to a mixture of different gases produced by the breakdown of organic matter in the absence of oxygen.

In thermodynamics, a critical point (or critical state) is the end point of a phase equilibrium curve.

In thermodynamics, the Joule–Thomson effect (also known as the Joule–Kelvin effect, Kelvin–Joule effect, or Joule–Thomson expansion) describes the temperature change of a real gas or liquid (as differentiated from an ideal gas) when it is forced through a valve or porous plug while kept insulated so that no heat is exchanged with the environment.

The kinetic theory describe a gas as a large number of submicroscopic particles (atoms or molecules), all of which are in constant rapid motion that has randomness arising from their many collisions with each other and with the walls of the container.

A supercritical fluid (SCF) is any substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist.

Breathing is the process that moves air in and out of the lungs, or the diffusion of oxygen and carbon dioxide to and from the external environment into and out of the blood through other respiratory organs such as gills.

Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline, petrol, biodiesel blends, diesel fuel, fuel oil, or coal.

Sulfur monoxide is an inorganic compound with formula SO.

Tetrafluorohydrazine or dinitrogen tetrafluoride, N2F4, is a colourless, reactive inorganic gas.

Fluorine azide or triazadienyl fluoride FN3 is a yellow green gas composed of nitrogen and fluorine with formula FN3.

Germanium tetrafluoride (GeF4) is a chemical compound of germanium and fluorine.

An inert gas is a gas which does not undergo chemical reactions under a set of given conditions.

Fluoromethane, also known as methyl fluoride, Freon 41, Halocarbon-41 and HFC-41, is a non-toxic, liquefiable, and flammable gas at standard temperature and pressure.

Cyclopropene is an organic compound with the formula C3H4.

Chloryl fluoride is the chemical compound with the formula ClO2F.

Selenoyl fluoride, selenoyl difluoride, selenium oxyfluoride, or selenium dioxydifluoride is a chemical compound with the formula SeO2F2.

In thermodynamics, the volume of a system is an important extensive parameter for describing its thermodynamic state.

Disulfur monoxide or sulfur suboxide is an inorganic compound with formula S2O.

Chlorine gas poisoning is illness resulting from the effects of exposure to chlorine beyond the threshold limit value.

Trimethylborane (TMB) is a toxic, pyrophoric gas with the formula B(CH3)3 (which can also be written as Me3B, with Me representing methyl).