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bombarded atoms w/ alpha particles, and noticed beam of radiation. The beam had no charge, and the molecules had mass
model later proved wrong by Heisenberg. planetary model- said that electrons move around the nucleus in energy levels and its called the planetary model because the e- orbit the nucleus like the planets orbit the sun
uncertainty principle- you can pinpoint speed or location of electrons but not both at the same time
quantum theory- e=hv. figured out that electron magnetic energy is quantized for a given frequency of radiation (or light)
discovered atomic theory: elements made of atoms, compounds 2+ different atoms, atoms cant be destroyed, same atoms are same.
plum pudding model
the model of the atom created by JJ Thomson, consists of electrons on the surface of a positively charged sphere
gold foil experiment
Rutherford's experiment involving shooting alpha particles at gold foil and observing them going through and bouncing off determining that the nucleus of an atom has a positive charge
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