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liable to ignite spontaneously on exposure to air.
• (of an alloy) emitting sparks when scratched or struck. |
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| directly into vapor when heated, typically forming a solid deposit again on cooling. |
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| accompanied by or requiring the absorption of heat. The opposite of exothermic . |
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| accompanied by the release of heat. The opposite of endothermic |
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| igniting spontaneously on mixing with another substance. |
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| combine or become combined chemically with oxygen : [ trans. ] |
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| any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group VIIA (17) of the periodic table. They are reactive nonmetallic elements that form strongly acidic compounds with hydrogen, from which simple salts can be made. |
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| Chemistry (of an element) tending to acquire electrons and form negative ions in chemical reactions. |
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Chemistry
of, relating to, or denoting chemical bonds formed by the sharing of electrons between atoms. Often contrasted with ionic |
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| formed by the electrostatic attraction of oppositely charged ions. Often contrasted with covalent . |
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| • technical of, relating to, or bringing about resonance in a circuit, atom, or other object. The sharing of electrons between nonmetal elements. These hydrocarbons form ring structures |
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| The sharing of outer shell electrons in a delocalized manner among all available orbitals orbitals of all the atomic nuclei in a crystal. ie copper and zinc to create brass |
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| An asphyxiant gas is a non-toxic or minimally toxic gas which dilutes or displaces the oxygen containing atmosphere, leading to death by asphyxiation if breathed long enough. |
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| The critical temperature, Tc, of a material is the temperature above which distinct liquid and gas phases do not exist. |
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| In physics or engineering, cryogenics is the study of the production of very low temperatures (below –150 °C, –238 °F or 123 K) and the behavior of materials at those temperatures. |
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| In physics or engineering, cryogenics is the study of the production of very low temperatures (below –150 °C, –238 °F or 123 K) and the behavior of materials at those temperatures. |
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| the concentration range of flammable vapors in air required to form an ignitable mixture |
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| Vapor pressure is the pressure of a vapor in equilibrium with its non-vapor phases. |
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| The flash point of a flammable liquid is the lowest temperature at which it can form an ignitable mixture in ai |
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| The boiling point of a substance is the maximum temperature at which a liquid can remain a liquid. Adding a small amount of heat energy (latent heat of vaporization) can convert the liquid into a gas. A pure liquid may change to a gas at temperatures below the boiling point through the process of evaporation. |
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| The minimum temperature required for flammable vapors to ignite without a continuing source if ignition |
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| As a general term, a substance is said to be anhydrous if it contains no water. The way of achieving the anhydrous form differs from one substance to another. |
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| denoting pure organic acids (esp. acetic acid) that form icelike crystals on freezing |
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| denoting pure organic acids (esp. acetic acid) that form icelike crystals on freezing |
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| (of an organic compound, esp. a fat or oil molecule) containing several double or triple bonds between carbon atoms. Polyunsaturated fats, which are usually of plant origin, are regarded as healthier in the diet than saturated fats. |
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| • a substance that slows down or prevents a particular chemical reaction or other process, or that reduces the activity of a particular reactant, catalyst, or enzyme |
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| a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. |
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the action of causing a bomb or explosive device to explode.
• a loud explosion : a series of deafening detonations was heard.
• technical combustion of a substance that is initiated suddenly and propagates extremely rapidly, giving rise to a shock wave. Compare with deflagration |
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