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  2. Iron - Wikipedia

    en.wikipedia.org/wiki/Iron

    This reaction raises the temperature to about 2000 °C. The carbon monoxide reduces the iron ore to metallic iron: [120] Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2. Some iron in the high-temperature lower region of the furnace reacts directly with the coke: [120] 2 Fe 2 O 3 + 3 C → 4 Fe + 3 CO 2

  3. Ferrous - Wikipedia

    en.wikipedia.org/wiki/Ferrous

    When metallic iron (oxidation state 0) is placed in a solution of hydrochloric acid, iron(II) chloride is formed, with release of hydrogen gas, by the reaction Fe 0 + 2 H + → Fe 2+ + H 2. Iron(II) is oxidized by hydrogen peroxide to iron(III), forming a hydroxyl radical and a hydroxide ion in the process. This is the Fenton reaction.

  4. Iron compounds - Wikipedia

    en.wikipedia.org/wiki/Iron_compounds

    Iron shows the characteristic chemical properties of the transition metals, namely the ability to form variable oxidation states differing by steps of one and a very large coordination and organometallic chemistry: indeed, it was the discovery of an iron compound, ferrocene, that revolutionalized the latter field in the 1950s. [2]

  5. Solid solution - Wikipedia

    en.wikipedia.org/wiki/Solid_solution

    Olivine is described by the formula (Mg, Fe) 2 SiO 4, which is equivalent to (Mg 1−x Fe x) 2 SiO 4. The ratio of magnesium to iron varies between the two endmembers of the solid solution series: forsterite (Mg-endmember: Mg 2 SiO 4) and fayalite (Fe-endmember: Fe 2 SiO 4) [2] but the ratio in olivine is not normally defined. With increasingly ...

  6. Metal - Wikipedia

    en.wikipedia.org/wiki/Metal

    The term is normally used for the elements, and examples include iron, nickel, lead, and zinc. Copper is considered a base metal as it is oxidized relatively easily, although it does not react with HCl. Rhodium, a noble metal, shown here as 1 g of powder, a 1 g pressed cylinder, and a 1 g pellet

  7. Iron ore - Wikipedia

    en.wikipedia.org/wiki/Iron_ore

    Metallic iron is virtually unknown on the Earth's surface except as iron-nickel alloys from meteorites and very rare forms of deep mantle xenoliths.Although iron is the fourth-most abundant element in the Earth's crust, composing about 5%, the vast majority is bound in silicate or, more rarely, carbonate minerals, and smelting pure iron from these minerals would require a prohibitive amount of ...

  8. Cementite - Wikipedia

    en.wikipedia.org/wiki/Cementite

    Cementite (or iron carbide) is a compound of iron and carbon, more precisely an intermediate transition metal carbide with the formula Fe 3 C. By weight, it is 6.67% carbon and 93.3% iron. By weight, it is 6.67% carbon and 93.3% iron.

  9. Iron–nickel alloy - Wikipedia

    en.wikipedia.org/wiki/Iron–nickel_alloy

    The surfaces of these metallic compounds provide a complex electron environment for catalyzing chemical reactions. [ 4 ] In steel metallurgy , nickel is alloyed with iron since 1888 (date of Schneider et Cie 's patent [ 5 ] on nickel steel based on Jean Werth's research [ 6 ] ) to produce maraging steel and some low-alloy steels .