History of the Atom Timeline by Kiera and Demontre

By kieraanndbuddy
  • 450

    Democritus(440 BC)

    Democritus(440 BC)
    Democritus discovery about atoms is that all abjects are made up of little indestructible and individual things called atoms. The method he used to make his discovery was based on his theories from observation.
    "Democritus Atom." Universe Today Rss. N.p., n.d. Wed. 26 Feb. 2014
  • 450

    Aristotle (332 BC)

    Aristotle (332 BC)
    Aristotle disvovered that all things are made up of form and matter which can be changed with growth, decay, or motion. Aristotle famikiarized himself with the entire developement of Greek thought.
    Dewitt, Tyler. "This Video Is Unavailable." Youtube. N.p., 6 Dec. 2012. Web. 03 Mar. 2014.

  • Dalton

    Dalton
    First, pure elements consist of particles called atoms. Second, atoms of an element are all the same for that element. Third, atoms of different elements can be torn apart by their atomic weights. Fourth, atoms of elements unite to form chemical compounds. Finally, atoms can neither be created or destroyed in chemical reaction. The grouping only changes.
    Dalton used theories from observations and experimentation.
    Dewitt, Tyler. "THis Video Is Unavailabe." Youtube. N.p., 6 Dec. 2012. Web.03 Mar.

  • Thomson

    Thomson
    Thomson discovered atoms are made up of electrons. Thomson method to make his discovery was experiments.
    "Science Blogs." Dot Physics. N.p., n.d. Web. 28 Feb.2014.

  • Rutherford

    Rutherford
    Rutherford discovered the atoms has a nucleus. Rutherford's gold foil experiment led him to his discovery.
    "Rutherford Model of the Atom." Rutherford Model of the Atom. N.p, n.d. Web. 25 Feb, 2014

  • Bohr

    Bohr
    Bohr discovered that the electrons spin around the nucleus. Bohr used hydrogen to make his discovery.
    Dewitt, Tyler. "This Video Is Unabailable." Youtube. N.p, 6 Dec. 2012. Web. 03 Mar. 2014

  • Schrodinger

    Schrodinger
    Schrodinger discovered lectrons moved around rather than a set path. He determined the probability location of electrons in atoms.
    "TImeline of the Atom." : Erwin Schrodinger. N.p., n.d. Wed. 27 Feb.

  • Heisenburg

    Heisenburg
    Heisenburg discovered the only way to descibe the location of an electron in an atom through probability distibution. Heisenburg used the uncertainty principle to make his discovery.
    "Science Blogs." Dot Physics. N.p., n.d. Web. 28. Feb. 2014.