hydrogen
hydrogen
Symbol: H
Atomic number: 1
Atomic weight: 1.0079
Colourless, odourless gaseous chemical element. Lightest and most abundant element in the universe. Present in water and in all organic compounds. Chemically reacts with most elements. Discovered by Henry Cavendish in 1776.

Elements of periodic system. 2013.

  • Hydrogen — Hy dro*gen, n. [Hydro , 1 + gen: cf. F. hydrog[ e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half… …   The Collaborative International Dictionary of English

  • Hydrogen — Capture d écran …   Wikipédia en Français

  • hydrogen — 1791, from Fr. hydrogène, coined 1787 by G. de Morveau, Lavoisier, Berthollet, and Fourcroy from Gk. hydr , stem of hydros water (see WATER (Cf. water) (n.1)) + Fr. gène producing (see GEN (Cf. gen)). So called because it forms water when exposed …   Etymology dictionary

  • hydrogen — [hī′drə jən] n. [Fr hydrogène (see HYDRO & GEN): coined (1787) by L. B. Guyton de Morveau (1737 1816), Fr chemist, in reference to the generation of water from the combustion of hydrogen] a flammable, colorless, odorless, gaseous chemical element …   English World dictionary

  • Hydrogēn — Hydrogēn, Wasserstoff; Hydrogēngas, Wasserstoffgas. Hydrogēnheizung u. Hydrogēnerleuchtung, Heizung u. Beleuchtung mit Wasserstoffgas, s.d. Hydrogēnpol, der negative Pol einer galvanischen Kette, weil an ihm sich bei der Zerlegung des Wassers das …   Pierer's Universal-Lexikon

  • Hydrogen — Hydrogēn (Hydrogenĭum, grch.), Wasserstoff …   Kleines Konversations-Lexikon

  • Hydrogen — Hydrogen, griech. dtsch., Wasserstoff; H. pol, negativer Pol, s. Galvanismus …   Herders Conversations-Lexikon

  • Hydrogen... — Hydrogen...,   Präfix für die Bezeichnung saurer Salze in der anorganischen Chemie; z. B. Hydrogencarbonate, die sauren Salze der Kohlensäure, Hydrogensulfate, die sauren Salze der Schwefelsäure …   Universal-Lexikon

  • hydrogen — ► NOUN ▪ a colourless, odourless, highly flammable gas which is the lightest of the chemical elements …   English terms dictionary

  • Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium …   Wikipedia