Atom's Timeline

  • 400


    stated that all matter is made up of atoms. He also stated that atoms are eternal and invisible and so small that they can’t be divided
  • lavoisier

    provided the formula for the conservation of matter in chemical reactions,
  • couloumb

    formulated the Coulomb's law, which states that that the force between two electrical charges is proportional to the product of the charges
  • john dalton

    formed the atomic theory, which states that all matter is composed of tiny, indestructible particles called atoms
  • crookes

    created the Crookes’ tube and demonstrated that cathode rays travel in straight lines and produce phosphorescence and heat when they strike certain materials.
  • j.j thomson

    discovered the electron and developed the plum-pudding model of the atom.
  • ernest rutherford

    used the results of his gold-foil experiment to state that all the mass of an atom were in a small positively-charged ball at the center of the atom.