meaning of hydrogen
1. 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.
2. a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
Related Words
hydrogen | hydrogen atom | hydrogen azide | hydrogen bomb | hydrogen bond | hydrogen bromide | hydrogen carbonate | hydrogen chloride | hydrogen cyanide | hydrogen fluoride | hydrogen iodide | hydrogen ion | hydrogen ion concentration | hydrogen peroxide | hydrogen sulfide | hydrogen-bomb | hydrogenate | hydrogenated | hydrogenating | hydrogenation | hydrogenide | hydrogenium | hydrogenize | hydrogenized | hydrogenizing | hydrogenous |
