History of the Atom Timetoast Timeline Kenysia & Trel'lesia

Aristotle(BC)

340

Stuff can be broken into elements, elements are atoms with different masses.

Democritus BC

450

Matter is composed of tiny particles solid and invisible, homogeneous and they differ in size and shapes he called atoms. "The History of Atomic Chemistry: Crash Course Chemistry #37." N.p., n.d. Web. https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=03ed97f7a2138f462cbbeaeff5296a6f.

Dalton

Feb 27, 1803

Elements exist descrete packets of matter. "The History of Atomic Chemistry: Crash Course Chemistry #37." N.p., n.d. Web. https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=03ed97f7a2138f462cbbeaeff5296a6f.

Thomson

Feb 27, 1897

He figured out thaat atoms had a charge buy use the Cathode Ray Tube Experiment.
"The History of Atomic Chemistry: Crash Course Chemistry #37." N.p., n.d. Web. https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=03ed97f7a2138f462cbbeaeff5296a6f.

Rutherford

Feb 27, 1911

The componets of an atom. He used an experiment called gold foil. "The History of Atomic Chemistry: Crash Course Chemistry #37." N.p., n.d. Web. https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=03ed97f7a2138f462cbbeaeff5296a6f.

Bohr

Feb 27, 1913

Electrons circles around the nucleus he used a model.
"The History of Atomic Chemistry: Crash Course Chemistry #37." N.p., n.d. Web. https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=03ed97f7a2138f462cbbeaeff5296a6f.

Heisenburg and Schrodinger

Feb 27, 1926

Waves can be used to describe electrons. Schrodinger equation. "The History of Atomic Chemistry: Crash Course Chemistry #37." N.p., n.d. Web. https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=03ed97f7a2138f462cbbeaeff5296a6f.