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cyanogen
(Encyclopedia) cyanogencyanogensīănˈəjən [key], NCCN, colorless, flammable, extremely poisonous gas with a characteristic odor somewhat like that of hydrogen cyanide. It melts at −35℃, boils at −21…ethylene
(Encyclopedia) ethyleneethyleneĕthˈəlēnˌ [key] or etheneethyleneĕthˈēn [key], H2C=CH2, a gaseous unsaturated hydrocarbon. It is the simplest alkene. Ethylene is colorless, has a faint odor, and has a…iodoform
(Encyclopedia) iodoformiodoformīōˈdəfôrmˌ [key], CHI3, yellow crystalline solid that has a penetrating odor. It melts at 119℃ and is insoluble in water but soluble in ether or ethanol. Iodoform was…denaturation
(Encyclopedia) denaturation, term used to describe the loss of native, higher-order structure of protein molecules in solution. Most globular proteins exhibit complicated three-dimensional folding…oxidases
(Encyclopedia) oxidases, in biochemistry, enzymes that catalyze reactions that directly involve molecular oxygen (see oxidation and reduction). Some utilize flavin coenzymes derived from riboflavin (…functional group
(Encyclopedia) CE5 functional group, in organic chemistry, group of atoms within a molecule that is responsible for certain properties of the molecule and reactions in which it takes part. Organic…Kisumu
(Encyclopedia) KisumuKisumukēs&oomacr;ˈm&oomacr; [key], city (1989 est. pop. 185,100), capital of Nyanza prov., SW Kenya, on Kavirondo Gulf (an arm of Lake Victoria). It is the principal lake…Wacker process
(Encyclopedia) Wacker process, an industrial process for the manufacture of ethanol by oxidizing ethene. For example, bubbling ethylene and oxygen when treated by an acidified water solution of…gasoline
(Encyclopedia) gasoline or petrol, light, volatile mixture of hydrocarbons for use in the internal-combustion engine and as an organic solvent, obtained primarily by fractional distillation and “…pyroxylin
(Encyclopedia) pyroxylinpyroxylinpīrŏkˈsĭlĭn [key], partially nitrated cellulose (see nitrocellulose). It is used in lacquers, plastics, and artificial leathers. Pyroxylin lacquers are made by…Trending
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