Camila H2

  • Democritus
    400 BCE

    Democritus

    development of atomic theory of the universe
  • Aristotle
    384 BCE

    Aristotle

    moved to athens and stayed at platos academy for 20 years
  • The Alchemists
    8 BCE

    The Alchemists

    santiagos dream
  • Plato
    5 BCE

    Plato

    athens dominated sparta
  • Lavoisier

    Lavoisier

    he was an experimenter and revolutionized chemistry
  • John Dalton

    John Dalton

    identified the nature of red-green color blindness
  • Newton's Law of Octaves

    Newton's Law of Octaves

    they attempted to classify elements based on their weight.
  • Mendeleev's Pd. Table

    Mendeleev's Pd. Table

    chemical properties of elements and their compounds
  • Photoelectric Effect

    Photoelectric Effect

    when the emission of electrons with electromagnetic radiation hit a material.
  • Discovery of Radioactivity

    Discovery of Radioactivity

    the atom wasnt indivisible or immutable
  • Discovery of the electron

    Discovery of the electron

    that all atoms have tiny negatively charged subtonic particles or electrons
  • Plancks Quantum Theory of Light

    Plancks Quantum Theory of Light

    radiates and absorbes energy
  • Plum Pudding Model

    Plum Pudding Model

    negatively charged electrons with positively charged soup
  • Rutherford's Gold Foil Experiment

    Rutherford's Gold Foil Experiment

    small percentage of alpha particles were deflected
  • Robert Millikan

    Robert Millikan

    oil drop experiment confirmed existence of the electron
  • Mosleys Atomic Numbers

    Mosleys Atomic Numbers

    arranged the elements on the periodic table
  • Bohr's Planetary Model

    Bohr's Planetary Model

    electrons travel to separate orbits around the nucleus.
  • Albert Einstein

    Albert Einstein

    his theory of relativity
  • Discovery of the proton

    Discovery of the proton

    Resulted in nuclear reaction.
  • Charge of the Electron

    Charge of the Electron

    atoms gain electrons and became negatively charged
  • Schrodinger Equation

    Schrodinger Equation

    wave equation that calculated levels of electrons in atoms
  • Heisenberg Uncertainty Principle

    Heisenberg Uncertainty Principle

    the position of speed for a particle had perfect accuracy
  • Discovery of the Neutron

    Discovery of the Neutron

    changed the scientists view of the atom