hydrogen  /h'ɑɪdrədʒən/

共發現 4 筆關於 [hydrogen] 的資料 (解釋內文之英文單字均可再點入查詢)

資料來源(1): pydict data [pydict]

  hydrogen
  氫

資料來源(2): Webster's Revised Unabridged Dictionary (1913) [web1913]

  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 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.

資料來源(3): WordNet (r) 2.0 [wn]

  hydrogen
       n : 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
           [syn: {H}, {atomic number 1}]

資料來源(4): Elements database 20001107 [elements]

  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.