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8 Cards in this Set

  • Front
  • Back
democritus
came up with idea of atom/unbreakable particle
lavoisier
law of conservation of matter
proust/law of constant composition
compounds always have the same ratio of elements by mass
dalton/atomic structure
matter is composed of atoms
all atoms of one element are the same
atoms arent created or destroyed
marie and pierre curie
did work with radioactivity
isolated ra and po
thompson
cathode ray tube expts
existence of electrons
plum pudding model
millikan
oil drop expts
determined mass and charge of electrons and protons
rutherford
alpha, beta radiation
gold foil expt
determined atom is mostly empty space
existence of neutrons