atomic theory

  • The Alchemist
    500 BCE

    The Alchemist

    They thought that they could turn any object into gold, but they did help people understand atoms better
  • Democritus
    400 BCE

    Democritus

    He discovered the atomic theory that Liquid atoms are smooth and the solid are ruff.
  • Plato
    350 BCE

    Plato

    He introduced the atomic theory in which ideas of geometric forms serve as atoms.
  • Robert Boyle

    Robert Boyle

    He discovered that atoms must exist based on the relationship between pressure and volume.
  • Antone Lavoisier

    Antone Lavoisier

    He found out the law of conservation that states that matter can neither be created nor destroyed.
  • Billard ball model

    Billard ball model

    This is a model in which invisible molecules make up an atom. this was theorized by John Dalton
  • John Dalton

    John Dalton

    The total pressure of a mixture a gas amounted to the sum of the particles pressure that each individual exerted while they occupied the same space. Created the Billard ball model.
  • Amadeo Avagadro

    Amadeo Avagadro

    He found out that elements could exist as molecules.
  • Dmitri Mendeleev

    Dmitri Mendeleev

    He created the first periodic table and told people there were more elements
  • JJ Thompson

    JJ Thompson

    He discovered the electrons in an atom which helped many other scientists.
  • Pierre and Marie Curie

    Pierre and Marie Curie

    they discovered that radioactivity made atoms break down.
  • Plum pudding

    Plum pudding

    it is electrons surrounded by a volume of positive charge. found out by JJ Thompson.
  • Albert Eistein

    Albert Eistein

    He mathematically figured out that atoms were real and created the mass equivalent formula which helped create atomic bombs.
  • Robert Millikan

    Robert Millikan

    He found out that electrons were negatively charged
  • Ernest Rutherford

    Ernest Rutherford

    He created a type of the solar system model
  • Neils Bohr

    Neils Bohr

    He discovered that the electrons are moving around the nucleus, and it looks like the solar system.
  • solar system model

    solar system model

    This is a model which the electrons circle the nucleus like a solar system. discovered by Bohr and Rutheroford.
  • Henry G.J Mosely

    Henry G.J Mosely

    He created the atomic number which shows the number of positive charges.
  • Heisenberg

    Heisenberg

    He found out that the electrons go in a random movement around the nucleus.
  • Erwin schrodinger

    Erwin schrodinger

    He found out about the electron cloud created by the electrons.
  • Electron cloud model

    Electron cloud model

    It is when the electrons are surrounding the atom in a cloud. discovered by Erwin Schrodinger.
  • James Chadwick

    James Chadwick

    He discovered the neutron in the atom.