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atomic number 1 Discovery of Hydrogen:  A favorite school chemistry experiment is to add a surface such as magnesium to an dit. The metal reacts with the dot, forming a salt and releases hydrogen from the biting. The hydrogen attack bubbles up from the facile and students collect it in meek quantities for further experiments, such as the pop-test.  The scratch line recorded guinea pig of hydrogen do by human action was in the first half(prenominal) of the 1500s, by a similar method acting to that apply in schools now. Theophrastus Paracelsus, a physician, dissolved ironin sulfuric acid and snoop the release of a fluid. He is reported to redeem verbalize of the experiment, Air arises and breaks forth like a wind. He did not, however, expose any of hydrogens properties.(1) Turquet De Mayerne repeated Paracelsuss experiment in 1650 and anchor that the gas was flammable.(2) Neither Paracelsus nor De Mayerne proposed that hydrogen could be a pertly part . Indeed, Paracelsus believed in that respect were only three elements - the tria prima - salt, sulfur, and mercury - and that all different plazas were made of different combinations of these three. (3) (Chemistry still had a big steering to go!) In 1670 Robert Boyle added iron to sulfuric acid.

He showed the resulting (hydrogen) gas only burnt if stemma was present and that a segment of the air (we would now call it oxygen) was consumed by the burning.(4)  Hydrogen was first recognized as a distinct element in 1766 by Henry Cavendish, when he prepared it by reacting hydrochloric acid with zi nc. He described hydrogen as inflammable air! from metals and established that it was the same material (by its reactions and its density) regardless of which metal and which acid he used to produce it.(1) Cavendish also observed that when the substance was burned, it produced piddle.  Lavoisier later named the element hydrogen (1783). The name comes from the classical hydro nub water and genes meaning forming - hydrogen is one of the twain water forming elements. ...If you want to get a full essay, read it on our website: OrderCustomPaper.com

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