Hoyo-SMITH-Period1

By Thealpal
  • 360

    Democritus

    Democritus
    The scientist primarily responsible for this model was Democritus.
    Model was adopted around 460 bc.
    "If you break a piece of matter in half, and then in half again, how many breaks will you have to make before you can break no further"?
    No experiment was done to prove this back then
  • 400

    Aristotle

    Aristotle
    Aristotle was primarily responsible for his model.
    Model was adopted around 400bc.
    This model proved that there was four elements fire,air,earth,and water.
    No experiment was done back then.

  • John Dalton

    John Dalton
    John Dalton was the scientist primarily responsible for the Billard Ball Model.
    This model was adopted in 1803.
    This model answered what the atom looked like and explained that it was a solid figure.

  • Henri Becquerel

    Henri Becquerel
    Henri Becquerel, Marrie Currie and Perrie Curie were all responsible for this model of the atom.
    This model was adopted in 1896.
    This model was adopted because it answered the question on how radioactivity acted and if the rays curved or were straight.
    On January 20th 1896 Henri used x-rays and they appeared to emonate from the area of a glass vacum tube made out of fluorescent, when struck by a beam of cathode rays.

  • Robert Millikan

    Robert Millikan
    Millikan was responsible for his model.
    His model was adopted in 1909.
    His model answered and discovered how much a charge on an atom can effect it's gravity.
    The Oil Drop Experiment was done to prove this.

  • Ernest Rutherford

    Ernest Rutherford
    Ernest Rutherford was primarily responsible for this model.
    This model was adopted in 1911.
    Model showed that an atom has an electron cloud and that the atom looks more like a gas than a solid figure.
    The Ray Tube experiment was done to prove this model.

  • JJ Thomson

    JJ Thomson
    JJ Thomson was responsible for his model.
    His model was adopted in 1911.
    His model cleared the questioning if the electron existed. Also explained that the electrons were inside the atom and didn't orbit around it out the outside.
    The Ray Tube experiment was done to prove this.

  • Neils Bohr

    Neils Bohr
    Neils Bohr was primarily responsible for this model.
    This model was adopted in 1913.
    His model explained the quantum of energy.
    His model was called the Bohr-Sommerfield Model.

  • Quantum Model

    Quantum Model
    Erwin Schrodinger was primarily responsible for this model.
    This model was adopted in 1925.
    The Compton Effect experiment was used to prove this model.

  • James Chadwick

    James Chadwick
    Marrie and Perrie curie were responsible for this model.
    This model was adopted in 1932.
    James used Marrie's and Pierrie's Compton Effect to discover the neutron. His model also answered the existence of the neutron.
    The Compton Effect was used to prove this model.

  • Marie and Pierre Curie

    Marie and Pierre Curie
    Marrie and Perrie Curie were responsible for this model of the atom.
    This model was adopted in 1932.
    This model discovered the neutron but Marrie and Perrie Curie didn't have enough evidence to convince others and the fact that they didn't know what they discovered was the neutron.
    The Compton Effect was done to prove this model.