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Joseph Priestley discovers oxygen the nature of elements.
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humphry davy findns the electrcity transforms chenicals
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John Dalton provides a way of linking invisible atoms.
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Italian chemist amedeo avogard finds that
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friendrich woehler accidentally synthesizes urea from inorganic materials.
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frienrich wekule figures out the chemical structure of benxene
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Gustar kir chhoff and robert Busen find that each element absorbs
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dmitry mendeleyer renlixes that if all of the
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J.J.Thomson discovers that ethe negatively charged particles
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Niels Bohr publishes his model of atomic struture.
