Atomic Theory Timeline

By Sydneydry
  • Democritus
    400

    Democritus

    Called them Atomos
    - They are solid
    - Different types of atomos are different shapes of sizes
  • Dalton

    Dalton

    • He called them atoms
    • Atoms aren't created or destroyed during chemical reactions, they just get rearranged
  • Thompson

    Thompson

    • Called the Plum Model
    • Atoms have negative particles called electrons which are surrounded by positive charge.
  • Rutherford

    Rutherford

    • Atoms mass in the nucleus
    • Electrons are in orbitals around the atom's nucleus.
  • Bohr

    Bohr

    • Called " Planetary Model"
    • The electrons orbitals have different energy levels.
  • Schrodinger

    Schrodinger

    • Called "Quantum Mechanical Model"
    • Electrons orbitals have different shapes
    • Electrons are waves of energy