history of the atomtimeline by preston rispone and Zane Smith

By preston67
  • 340

    aristotle bc

    aristotle bc
    didn't believe in the atom theory.he used observation. "Chemistry Project : The History Of The Atom." Chemistry Project : The History Of The Atom.
  • 460

    democritus(460B,C.

    democritus(460B,C.
    he thought matter coul no longer be cut at some point and called that point an atom.Democritus use theories from observation. "History of Atoms." History of Atoms.

  • dalton

    dalton
    he said matter is made up of atoms. he gathered evidence to find this out. he said the atom looks like tiny balls."A Brief History of Modern Atomic Theory." Chemistry Tutorial : History of Atomic Theory.

  • thomson

    thomson
    In 1897, the English physicist J.J. Thomson discovered the electron and proposed a model for the structure of the atom. Thomson knew that electrons had a negative charge and thought that matter must have a positive charge. "History of Atoms." History of Atoms.

  • rutherford

    rutherford
    He found out that atoms had nucleuses."History of Atoms." History of Atoms.

  • bohr

    bohr
    Bohr beleived that the electrons spin around the nucleus. He used observation to find this out. He tought the electrons were like planets orbiting the sun. "History of Atoms." History of Atoms. N.p., n.d. Web. 26 Feb. 2014.

  • heisenberg & schrodinger

    heisenberg & schrodinger
    He thought electrons occupied orbitals. They used the quantom mechanical model. he thought the atom was fuzzy and that it buzzed."A Brief History of Modern Atomic Theory." Chemistry Tutorial : History of Atomic Theory. N.p., n.d. Web. 25 Feb. 2014.