ATOM theory
Category: Other
Updated: 21 Oct 2018
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Created byCamila Aviles rodriguez
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Events
Democritus: came up with the idea of the atomic theory of the universeErnest Rutherford: conducted the Gold Foil experimentJ.J. Thomson: discovered the electronAntoine Lavoisier: came up with the Law of Conservation of Mass.John Dalton: developed the law of multiple proportions about how elements combine.Plum Pudding Atomic ModelLaw of Conservation of Mass: By Lavoisier stating in a chemical reaction, matter is neither created nor destroyed.Borh Planetary ModelElectron Cloud ModelOil Drop Experiment: measured the electric charge, they observed tiny electrically charged droplets of oilRutherford ModelGold Foil Experiment: by Rutherford, proved the existence of the nucleus.Cathode Ray Tube Experiment: a vacuum with two electric plates that produced a positive anode and a negative cathode to deflect rays.Dalton’s Atomic Theory: all matter is made of atoms that are indivisible and indestructible, all atoms of a given element are identical in mass and property, compounds are formed by the combination of two or more atoms of different kinds, and a chemical reaction is a rearrangement of atoms.Erwin Schrodinger- came up with the Quantum Mechanical model of the atom; successfully predicted the location of electrons in atoms.Niels Bohr: proposed the Bohr model of the atom, Also participated in the finding of the atomic bombRobert Millikan: measured the charge of electrons; he did this in the oil drop experiment.James Chadwick: conducted an experiment bombarding Beryllium with alpha particles.
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