About 1,730,000 results
Open links in new tab
  1. Hydrogen - Wikipedia

    Hydrogen is a chemical element; it has the symbol H and atomic number 1. It is the lightest and most abundant chemical element in the universe, constituting about 75% of all normal matter.

  2. Hydrogen | Properties, Uses, & Facts | Britannica

    Oct 17, 2025 · The earliest known chemical property of hydrogen is that it burns with oxygen to form water; indeed, the name hydrogen is derived from Greek words meaning ‘maker of water.’

  3. Hydrogen explained - U.S. Energy Information Administration (EIA)

    Hydrogen occurs naturally on earth in compound form with other elements in liquids, gases, or solids. Hydrogen combined with oxygen is water (H 2 O). Hydrogen combined with carbon …

  4. Hydrogen - Formula, Properties, Uses, Facts - Study Chemistry

    Hydrogen, symbol H, molecular formula H2 is a colourless, odourless, tasteless, flammable gaseous chemical substances among the periodic table family

  5. Hydrogen - Wikiwand

    Hydrogen is a chemical element; it has the symbol H and atomic number 1. It is the lightest and most abundant chemical element in the universe, constituting about 75% of all normal matter.

  6. Hydrogen - Element information, properties and uses | Periodic …

    Element Hydrogen (H), Group 1, Atomic Number 1, s-block, Mass 1.008. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

  7. Ultimate Guide to Hydrogen: Chemical Properties, Uses

    Delve into the comprehensive guide on Hydrogen, the universe's most abundant element. Uncover its rich history, physical and extended chemical properties, and myriad uses in …

  8. Hydrogen - Department of Energy

    Nov 4, 2025 · Hydrogen has been described as the “Swiss army knife” of energy because it plays a key role in several sectors where there are limited or no viable alternatives (including in …

  9. Hydrogen | History, Uses, Facts, Physical & Chemical Characteristics

    Hydrogen is one of the three most abundant elements present on Earth. It was discovered in 1766 by Henry Cavendish and is widely used for various industrial, medical and recreational purposes.

  10. Hydrogen (H) - Definition, Preparation, Properties, Uses, …

    Jan 21, 2025 · Hydrogen is the simplest and most abundant element in the universe, consisting of just one proton and one electron. This lightweight, colorless gas is found in great abundance in …