The Atomic Theory

By paupha1
  • Dalton's Contribution to the Atomic Theory

    1) All matter is made of atoms. Atoms are indivisible and indestructible.
    2) All atoms of a given element are identical in mass and properties
    3) Compounds are formed by a combination of two or more different kinds of atoms.
    4) A chemical reaction is a rearrangement of atoms.
  • JJ Thomson's Contribution to the Atomic Theory

    His atomic theory identified that electrons inside an atom could show, meaning that atoms were not invisible. Thomson suggested that the model of an atom as a sphere of positively charged matter with negatively charged electrons surrounding them. He stated that electrons were positioned by electrostatic forces. After the discovery of the electron and proton as subatomic particles J.J. Thomson had started to discover atomic theory that gives complete explanation of atomic structure.
  • Rutherford's Contribution to the Atomic Theory

    Ernest Rutherford publishes his atomic theory describing the atom as having a central positive nucleus surrounded by negative orbiting electrons. This model suggested that most of the mass of the atom was contained in the small nucleus, and that the rest of the atom was mostly empty space. Rutherford also does the Gold Foil Experiment.
  • Albert Einstein's Contribution to the Atomic Theory

    Albert Einstein brought about the formula: E=MC². In physics, in particular special and general relativity, mass–energy equivalence is the concept that the mass of a body is a measure of its energy content.
  • Milikin's Contribution to the Atomic Theory

    Oil drop experiment determined the charge (e=1.602 x 10 -19 coulomb) and the mass (m = 9.11 x 10 -28 gram) of an electron.