History of the Atom TImeline (Hannah G. & Andrea N.)

By hannah.glynn2018
  • 400

    Democritus

    Democritus
    Democritus said: He believed the atom was the smallest particle of matter. He also said that everything is made up of atoms.Democritus didnt have a definite way of figuring this out it was just a hypothesis at the time. Huffman, Carl. "World Book Online Reference Center | Online Reference Book| Online Encyclopedia." World Book. World Book, n.d. Web. 20 Feb. 2015.98

  • Dalton

    Dalton
    Dalton said: 1.Matter is made upoff atoms
    2. Atoms are indivisible and indestructible
    3.Compounds are formed by a combination of 2 or more different kinds of atoms
    He figured this out by using a series of science experiments , he based his experiments upon the 2 theories that were hypothesized at the end of the 18th century. Bio.com. A&E Networks Television, n.d. Web. 11 Feb. 2015.

  • Thompson

    Thompson
    Thompson said: Discovered the electron in a bunch of experiments to study the electric "discharge".
    He began studying cathode rays , and used the plum pudding model. Grayson, Mike. "Joseph John Thomson | Chemical Heritage Foundation." Joseph John Thomson | Chemical Heritage Foundation. N.p., n.d. Web. 11 Feb. 2015

  • Rutherford

    Rutherford
    Rutherford said: He discovered the nucleus of the atom. Rutherford discovered alpha and beta waves.
    He made i his discovery by: Using pure gold foil and he shot a stream of alpha particles.
    "Rutherford Model of the Atom." Rutherford Model of the Atom. N.p., n.d. Web. 23 Feb. 2015

  • Bohr

    Bohr
    Bohr said:he developed the bohr model of the atom in which he propsed that every levels if electrons are no seen. Eectrons revolved in stable orbits. He discovered this by:He got the idea that items coiuld be seperated analysis in terms of contradictory properties Palermo, By Elizabeth. "Niels Bohr: Biography & Atomic Theory." LiveScience. TechMedia Network, 14 May 2013. Web. 18 Feb. 2015

  • Heisennberg and Schrodinger

    Heisennberg and Schrodinger
    Heisennberg and Schrodinger said: Electrons dont cross a definite path but insteadd there are certain parts of the atom contain electrons.
    They figuredd this out: Theyused equations, kinetic energy, potential energy, and wave lengths
    This is our current atom model we use today
    "Atom." Atom. N.p., n.d. Web. 25 Feb. 2015.