hydrogen definition

  • noun:
    • A colorless, highly combustible gaseous factor, the lightest of all gases as well as the many plentiful element in the world, utilized in the production of artificial ammonia and methanol, in petroleum refining, into the hydrogenation of organic materials, as a reducing environment, in oxyhydrogen torches, and in rocket fuels. Atomic # 1; atomic fat 1.00794; melting point -259.14°C; boiling point -252.8°C; density at 0°C 0.08987 gram per liter; valence 1. See dining table at element.
    • The lightest substance factor (image H) with an atomic range 1 and atomic fat of 1.00794.
    • Molecular hydrogen (H2), a colourless, odourless and flammable gas at room-temperature.
    • An atom of this factor.
    • A sample of this element.
    • A gaseous element, colorless, tasteless, and odorless, the lightest known material, becoming fourteen . 5 times lighter-than-air (therefore its use in stuffing balloons), and over eleven thousand times lighter than water. It is extremely plentiful, becoming a component of water and of a number of other substances, specially those of pet or vegetable origin. It could by manufactured in various ways, it is mainly acquired by the action of acids (as sulphuric) on metals, as zinc, metal, etc. It's very inflammable, and it is an ingredient of coal-gas and water-gas. It is standard of substance equivalents or incorporating weights, as well as of valence, becoming the normal monad. Icon H. Atomic fat 1.
    • Chemical image, H. One of many elementary substances, present as a colorless, tasteless, and inodorous fuel.
    • H2S, a colorless inflammable gas having a sweetish flavor and an exceedingly fetid odor resembling bad eggs. It is extremely poisonous when inhaled. It offers feeble acid properties, and its own substances with bases are known as sulphids. It occurs inside emanations of volcanoes, and it is developed when pet or vegetable tissue containing sulphur decays. Additionally happens in mineral springs, being liberated because of the reduction of gypsum or any other sulphates through activity of a microbe.
    • Hydrogen substances with highly electronegative elements or radicals, quickly swapping hydrogen for strongly electropositive elements or radicals to form salts, are identical as acids: as hydrogen chlorid (hydrochloric acid), hydrogen sulphate (sulphuric acid), etc.
    • a nonmetallic univalent element that is normally a colorless and odorless very flammable diatomic fuel; the simplest and lightest & most numerous element in the universe

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