Atoms

Scientist and the Atom

By Princetonsbaby9
  • 400

    Democritus

    Democritus
    • Matter is made of particles called atomos
    • Atomos are solid and indivisible -Different atomos = different sizes and shapes

  • Dalton

    Dalton
    -Atoms are neither created nor destroyed by a chemical reaction, but they may be rearranged

  • Thompson

    Thompson
    -Discovered electrons with cathode ray experiment
    -Developed "plum pudding" atomic model

  • Rutherford

    Rutherford
    -Most of atoms mass in nucleus
    -Nucleus = Positive charge
    - Electrons = in fixed orbitals around the nucleus

  • Bohr

    Bohr
    • "Planetary" Atomic Model. Nucleus is surrounded by electrons, which orbit at different energy levels.

  • Schrodinger

    Schrodinger
    • Electron orbitals have different shapes
    • Both particles and waves of energy at the same time