atomic model timeline

  • Plato
    430 BCE

    Plato

    He suggested that everything os made up of small units. A fact is that Plato was a famous greek philosopher.
  • Democritus (460 BC - 370 BC)
    370 BCE

    Democritus (460 BC - 370 BC)

    He proposed the concept of the atom as an indivisible particle.
  • Solar system model
    330 BCE

    Solar system model

    Made my Niels Bohr explaining how things orbit.
  • The Alchemists (476 A.D - 1400)
    1400

    The Alchemists (476 A.D - 1400)

    They were the first people to isolate certain metals. What we know now to be elements.
  • Robert Boyle

    Robert Boyle

    He is known for the Boyle law, about the relationship between the pressure and volume of gas.
  • Antone Lavoisier

    Antone Lavoisier

    He defined and named oxygen and hydrogen as elements. He also developed the law of conservation of mass and the law of definite proportions.
  • Billiard Ball model

    Billiard Ball model

    This was made by John Dalton this was the earliest atomic model.
  • John Dalton

    John Dalton

    He developed the atomic theory. He also proposed that elements are composed of individual atoms.
  • Amedeo Avogadro

    Amedeo Avogadro

    He established a relationship between the number of particles in a gas. The fact is he was an Italian scientist.
  • Dmitri Mendeleev

    Dmitri Mendeleev

    He created the periodic table. A fact is he was a Russian chemist.
  • JJ Tompson

    JJ Tompson

    He discovered the electron. A fact is that he received the noble prise in 1906.
  • Pierre and Marie Curie

    Pierre and Marie Curie

    They discovered two radioactive chemicals, radium and Polonium. A fact is that Marie was the first woman who won two different noble prizes.
  • Plum Pudding model

    Plum Pudding model

    Made by JJ Tompson, it introduced subatomic particles
  • Albert Einstein

    Albert Einstein

    He formulated the equation e=mc^2, which helped the world understand science more.
  • Robert Millikan

    Robert Millikan

    He determined the charge of the electron and allowed for the calculation of this mass.
  • Ernest Rutherford

    Ernest Rutherford

    He discovered that atoms have a nucleus. A fact is that he is from New Zealand
  • Neils Bohr

    Neils Bohr

    He proposed an idea for the model of an atom.
  • Henry G. J. Mosely

    Henry G. J. Mosely

    He reorganized the periodic table based on atomic numbers. A fact is that he died in World War I.
  • Erwin Schrödinger

    Erwin Schrödinger

    We developed an equation. The fact is he was an Austrian physicist.
  • Electron Cloud model

    Electron Cloud model

    This was the most popular model of the atom.
  • James Chadwich

    James Chadwich

    He discovered the neutron. A fact is he won a noble prize in 1935 for his work.