Atomic Theory by Jack Eibel

By MC117
  • Antoine Lavoisier

    He used this experiment to help himself come up with the Law of Conservation. The law states that matter cannot be made or destroyed.
  • Joseph Louis Proust

    "Proust stated the Law of Definite Proportions. The law states that the ratio of elements in a compound is always the same/constant. he also set up for Dalton to create the Law of Multiple Proportions and ultimately his Atomic Theory."
  • John Dalton

    John Dalton
    he compiled it into what we call Dalton's Theory. His theory contained 6 parts:
    1.matter is composed of extremely small particles called atoms
    2.atoms are indivisible and indestructable
    3.atoms of a given element are identical in size, mass, and chemical properties
    4.atoms of specific elements are different thatn those of other elements a chemical reaction, atoms separate, combine and/or rearrange
  • Michael Faraday

    Studied the effect of electricity on solutions.splitting of molecules with electricity, developed laws of electrolysis
  • J.J Thomson

    J.J Thomson
    Thomson found the electron in a sereies of experiments. " Thomson suggested a model of the atom as a sphere of positive matter in which electrons are positioned by electrostatic forces"
  • Robert Millikan

    Studied the charge of electrons by doing a series of experments. proved Thomson's hypothesies that there is a charge to mass ratio.
  • Henri Becquerel

    discovered some chemicals spontaneously decompose and give off very pentrating rays.
  • Marie Curie

    Studied uranium and thorium and called their spontaneous decay process "radioactivity".
  • Max Planck

    used the idea of quanta to explain hot glowing matter.
  • Albert Einstein

    Published the famous equation E=mc 2.
  • Ernest Rutherford

    Ernest Rutherford
    gold foil experiment led him to find there was something in the center of the atoms, called the nucleus. This led to his nuclear model of an atom.
  • Niels Bohr

    Niels Bohr
    His atomic model had atoms built up of sucessive orbital shells of electrons.
  • Louis DeBroglie

    Discovered that electrons had a dual nature-similar to both particles and waves. Particle/wave duality. Supported Einstein.
  • Ernest Schrodinger

    Ernest Schrodinger
    took the Bohr atom model one step further.Schrödinger used mathematical equations to describe the likelihood of finding an electron in a certain position. This atomic model is known as the quantum mechanical model of the atom.
  • James Chadwick

    discovered a neutral atomic particle with a mass close to a proton. Thus was discovered the neutron.
  • Otto Hahn / Lisa Meitner

    discovered spliting of the atom "Fission".
  • Glen T. Seaborg

    Synthesized 6 transuranium elements and suggested a change in the layout of the periodic table.