Craft,+Jesse

// Hydrogen: H // 2H2(g) + O2(g) → 2H2O(l) Hydrogen gas, H2, reacts with fluorine, F2, in the dark to form hydrogen(I) fluoride. H2(g) + F2(g) → 2HF(g) // Unusual facts : // Hydrogen is found in the sun and most of the stars, and is easily the most abundant element in the universe. The planet Jupiter is composed mostly of hydrogen, and there is a theory that in the interior of the planet the pressure is so great that metallic hydrogen is formed from solid molecular hydrogen. On Earth, hydrogen is found in the greatest quantities in water, but is present in the atmosphere only in small amounts - less than 1 part per million by volume. Hydrogen is prepared commercially by several methods; manufactured from methane gas, electrolysis of water and aqueous salts.
 * // Boiling point:20.28 //
 * // Melting point:14.01 //
 * // Specific Gravity/Density: 89 //
 * // Protons:1 //
 * // Neutrons:0 //
 * // electrons:1 //
 * // Atomic mass:1 //
 * // Atomic number: 1 //
 * // Electron configuration and orbital notation: 1s^1 //
 * // # of valence electrons:1 //
 * // Where and how produced or mined: //
 * // How, when and who discovered: // In the early 1500s the alchemist Paracelsus noted that the bubbles given off when iron filings were added to sulfuric acid were flammable. Also in 1671 Robert Boyle made the same observation. Neither followed up their discovery of hydrogen, and so Henry Cavendish gets the credit. In 1766 he collected the bubbles and showed that they were different from other gases. He later showed that when hydrogen burns it forms water, thereby ending the belief that water was an element. The gas was given its name // hydro-gen //, meaning water-former, by Antoine Lavoisier.
 * // Physical prop: // Hydrogen is a colorless, odorless, tasteless gas. Its density is the lowest of any chemical element, 0.08999 grams per liter. By comparison, a liter of air weighs 1.29 grams, 14 times as much as a liter of hydrogen
 * // Chemical: // Hydrogen burns in air or oxygen to produce water
 * // Minerals //
 * Compunds hydrochloric acid, hydrochloric acid, nitric acid.
 * Two common chemical reactions: Hydrogen is a colourless gas, H2, that is lighter than air. Mixtures of hydrogen gas and air do not react unless ignited with a flame or spark, in which case the result is a fire or explosion with a characteristic reddish flame whose only products are water, H2O.
 * // Industrial or commercial uses: fuel //
 * // Cost or value: // $100 per kilog[[image:lvscience/bohr_model.jpg width="402" height="356"]]ram
 * // Diagram //
 * // Element in pure state[[file:hydrgen pure satate.bmp]] //

Credits


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[|http://www.chemtutor.com/elem.htm#hydrogen]


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