Jimmy neutron atom time line project.

History of the Atom Timeline by Nekyah Morris and Jayla Woodson

By Zoaxo
  • 450

    Democritus (386 B.C.)

    Democritus (386 B.C.)
    He believed matter could not be divided into smaller pieces, at some point a smallest possible piece would be left and it would be indivisible. He named it "Atomos" which means "not to be cut". He believed that atoms were infinite in number, capable of joining together, made up of the same materials, and different shapes and sizes. He wasn't a scientist and had done no experiments and had no models. Only imagination. DeWitt, Tyler. "Models of the Atom Timeline." YouTube. YouTube, 06 Dec. 2012.
  • 450

    Aristotle *around the same time as Democritus*

    Aristotle *around the same time as Democritus*
    Aristotle believed that different things were made up of the different elements of the earth. He had the idea that since things can be broken down then matter must be made of smaller pieces, he did not believe in "nothingness", or the idea that atoms moved through empty space. DeWitt, Tyler. "Models of the Atom Timeline." YouTube. YouTube, 06 Dec. 2012. Web. 26 Feb. 2014.

  • John Dalton

    John Dalton
    Dalton believed that atoms arranged in different combinations to make different thing and that atoms were tiny and indivisible. Dalton actually conducted the first experiments that showed that matter was made up of tiny particles. DeWitt, Tyler. "Models of the Atom Timeline." YouTube. YouTube, 06 Dec. 2012. Web. 26 Feb. 2014.

  • J.J. Thomson

    J.J. Thomson
    Thomson discovered that atom were not in fact indivisible because they had electrons which are much smaller than an atom itself. He believed that if an atom were to be split open that the electron would be like that of the blueberries in a blue berry muffin, stuck in the atom. His model of the atom is called the "Plum Pudding Model". DeWitt, Tyler. "Models of the Atom Timeline." YouTube. YouTube, 06 Dec. 2012. Web. 26 Feb. 2014.

  • Earnest Rutherford

    Earnest Rutherford
    Rutherford discovered that the atom had a nucleus in an experiment that he performed called "The Gold Foil Experiment". He added a positive nucleus to the model of the atom. He also came to conclusion that besides the nucleus and the electrons that atoms are just empty space. DeWitt, Tyler. "Models of the Atom Timeline." YouTube. YouTube, 06 Dec. 2012. Web. 26 Feb. 2014. Harvey, Nicole. "Unit 5 Concept 2 Atomic Theory." Unit 5 Concept 2 Notes. United States, Zachary. 26 Feb. 2014. Lecture.

  • Niels Bohr

    Niels Bohr
    Bohr discovered that electrons are not randomly distribute led throughout the atom, that they are in fact spinning around the nucleus in circular orbits, added orbits to the model of the atom. Bohr worked with Rutherford and improved Rutherford's model because he believed that it was wrong. He also believed that only certain orbits of the electrons were allowed. DeWitt, Tyler. "Models of the Atom Timeline." YouTube. YouTube, 06 Dec. 2012. Web. 26 Feb. 2014. Harvey, Nicole. "Unit 5 Concept 2 Ato

  • Heisenberg and Schrodinger

    Heisenberg and Schrodinger
    Showed that electrons move all around the atom and not in a particular orbit around the nucleus, he added orbitals. A model based of the earlier ones was made which showed a complete atom as intricate waves. The name of this model is the Quantum Mechanics Model. DeWitt, Tyler. "Models of the Atom Timeline." YouTube. YouTube, 06 Dec. 2012. Web. 26 Feb. 2014. "Erwin Schrödinger - Facts". Nobelprize.org. Nobel Media AB 2013. Web. 27 Feb 2014.

  • Citations

    Works Cited
    DeWitt, Tyler. "Models of the Atom Timeline." YouTube. YouTube, 06 Dec. 2012. Web. 26 Feb. 2014.
    Harvey, Nicole. "Unit 5 Concept 2 Atomic Theory." Unit 5 Concept 2 Notes. United States, Zachary. 26 Feb. 2014. Lecture.
    "Erwin Schrödinger - Facts". Nobelprize.org. Nobel Media AB 2013. Web. 27 Feb 2014. http://www.nobelprize.org/nobel_prizes/physics/laureates/1933/schrodinger-facts.html