Events
James Chadwick - proved the existence of neutrons.Gold Foil Experiment - Ernest Rutherford shot a beam of alpha particles
at a sheet of gold foil, a few of the particles were deflected.Cathode Ray Tube Experiment - J.J Thomson, showed that all atoms
contain tiny negatively charged subatomic particles or electrons.Antoine Lavoisier - created the
Law of Conservation of MassNiel Bohr - electrons could only occupy particular orbits
determined by the quantum of actionErnest Rutherford - established the nuclear theory of the atom with his gold-foil experiment.
He concluded that a tiny, dense nucleus was causing the deflections.Rutherford Model - the electrons orbit the nucleus similar to the orbit of planets about the sunErwin Schrodinger - created The Schrodinger Equation
and the Electron Cloud ModelElectron Cloud Model - electrons were no longer depicted as particles
moving around a central nucleus in a fixed orbit.Democritus; Created the formulation of an atomic theory of the universeJ.J. Thomson; created the plum pudding model, showing that electrons have a negative electic chargeErnest Rutherford; Created the gold foil experiment which led him to find a nucleus in the atomNeils Bohr; Created the Bohr Planetary Model, depicts the atom as a small positive atom, with electrons orbiting around the nucleusJohn Dalton; Created a theory that proposed all matter was composed of atomsRobert Millikan; Created the oil drop experiment to help quantify the charge of an electron
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