History of Atom TimeToast Timeline by Racquel Jiles and Raven Fowler

By Broncos4ever
  • 400

    Democritus ( B.C.)

    Democritus ( B.C.)
    He renamed "Atomos" to atom, which means uncuttable. He hypothized that substances can be cut into smaller substances. He used his philospher Leucippu's ideas to discover what he discvered about the atom.
    "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.

  • Dalton

    Dalton
    He discovered that atoms of a given element are identical in size, shape, and mass. Matter consists indivisible atoms. He gathered his evidence from experiments.
    "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.
    "Atom." Atom. N.p., n.d. Web. 20 Feb. 2015.

  • Thompson

    Thompson
    Discovered that atoms weren't totally solid and indivisibe, but they are made up of smalller sub. atomic particles.Thompson used an experiment using the cathorade ray tube and it made cathode rays.
    DeWitt, Tyler. "GaggleTube Video - Discovery of the Electron: Cathode Ray Tube Experiment." GaggleTube Video - Discovery of the Electron: Cathode Ray Tube Experiment. N.p., n.d. Web. 23 Feb. 2015.

  • Rutherford

    Rutherford
    Discovered that neary all of the mass of and atom is concentrated in a tiny nuclues. He believed there was something small and hard in the atoms.Rutherford used the gold foil experiment.
    DeWitt, Tyler. "GaggleTube Video - Discovery of the Nucleus: Rutherford's Gold Foil Experiment." GaggleTube Video - Discovery of the Nucleus: Rutherford's Gold Foil Experiment. N.p., n.d. Web. 23 Feb. 2015

  • Bohr

    Bohr
    Believed that the atom orbits around a group of positevely charged atoms. Bohr used the quantun theory by shinnig a light with different colors.
    Saffman, Mark. "Atom." World Book Advanced. World Book, 2015. Web. 23 Feb. 2015.

  • Heisenberg and Schrodinger

    Heisenberg and Schrodinger
    He believed that atoms weren't really spinning in orbits, buut in orbitals. He used math ( quanutm mechanics ) to help him come up with this theory.
    "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.
    Saffman, Mark. "Atom." World Book Advanced. World Book, 19 Feb. 2015. Web