HYDROGEN • E-FREE TRANSLATION.COM • Definition of Hydrogen

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/hˈaɪdrədʒən/ Listen

noun

Hydrogen n. (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1. Note: Although a gas, hydrogen is chemically similar to the metals in its nature, having the properties of a weak base. It is, in all acids, the base which is replaced by metals and basic radicals to form salts. Like all other gases, it is condensed by great cold and pressure to a liquid which freezes and solidifies by its own evaporation. It is absorbed in large quantities by certain metals (esp. palladium), forming alloy-like compounds; hence, in view of quasi-metallic nature, it is sometimes called hydrogenium. It is the typical reducing agent, as opposed to oxidizers, as oxygen, chlorine, etc.

Bicarbureted hydrogen, an old name for ethylene.

Carbureted hydrogen gas. See under Carbureted.

Hydrogen dioxide, a thick, colorless liquid, H2O2, resembling water, but having a bitter, sour taste, produced by the action of acids on barium peroxide. It decomposes into water and oxygen, and is manufactured in large quantities for an oxidizing and bleaching agent. Called also oxygenated water.

Hydrogen oxide, a chemical name for water, H2O.

Hydrogen sulphide, a colorless inflammable gas, H2S, having the characteristic odor of bad eggs, and found in many mineral springs. It is produced by the action of acids on metallic sulphides, and is an important chemical reagent. Called also sulphureted hydrogen.

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Etymology of 'Hydrogen'

Collaborative International Dictionary of English 0.48

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"Hydrogen" Quotes from Famous Books

... gas, and one markedly lighter than the atmosphere. I should say beyond doubt that it contained a considerable proportion of free hydrogen. The resources of G. E. C. are not yet exhausted, my young friend. I may yet show you how a great mind molds all Nature to its use." He swelled with some secret purpose, but would say ...

— The Lost World • Arthur Conan Doyle

... your uranium-refining plants, your military reactors, heavy-water and heavy-hydrogen plants, and so on." Another man appeared, but ...

— The Galaxy Primes • Edward Elmer Smith

... the soil of Central Asia is like a sponge impregnated with liquid hydrogen. At the port of Bakou, on the Persian frontier, on the Caspian Sea, in Asia Minor, in China, on the Yuen-Kiang, in the Burman Empire, springs of mineral oil rise in thousands to the surface of the ground. It is an "oil country," similar to the one which bears this ...

— Michael Strogoff - or, The Courier of the Czar • Jules Verne

... combine to make it fertile. Among these are various sulphates which form important parts of plant foods. These sulphates appear to be formed, in part, at least, by bacterial agency. The decomposition of proteids gives rise, among other things, to hydrogen sulphide (H2S). This gas, which is of common occurrence in the atmosphere, is oxidized by bacterial growth into sulphuric acid, and this is the basis of part of the soil sulphates. The deposition of iron phosphates ...

— The Story Of Germ Life • H. W. Conn

... study of domestic economy form a part of every school course? A young girl will stand up at the blackboard, and draw and explain the compound blowpipe, and describe all the processes of making oxygen and hydrogen. Why should she not draw and explain a refrigerator as well as an air-pump? Both are to be explained on philosophical principles. When a schoolgirl, in her chemistry, studies the reciprocal action of acids and alkalies, ...

— Household Papers and Stories • Harriet Beecher Stowe

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