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Period: 100 to
Atomic Theory Time Line Project
This is Sciencetology at it's finest -
406
Democritus born
Democritous"by convention bitter, by convention sweet, but in reality atoms and void" (http://atomictimeline.net/) Democritus came up with a very detailed explination of atoms that were well beyond his time. his theory stated that everything was made of atoms, that could not be created nor destroyed, and the shape could depend on what kind of atom. -
406
The Invisible Atom
DemocritusDemoritus's Model of the atom that Was very basic. Not having any detail of A nucleous, electretrons, protons, or neautrons. -
Antoine Lavoisier
chemed.chem.purdue.edu/ First to understand and publish the law of conservation, stating energy cannot be created or dsestroyed. He also found over te elements and brought up the innitial talk of what an atom realy was. -
Joseph-Louis Proust
Law of Definite Proportions most famous for the law of definite proportion. Saying no mater how a compound is formed their will be a proportional ratio between each part of the compound. -
John Dalton
John Dalton’s Atomic Model John daltons contribution to the atomic theory was the facts of atoms being related to mass, and compounds. He bekived that pure elements were made of atoms. and that and elements was the same down to an atom. -
Michael Faraday
atomictimeline Michael Faraday explored " electrolysis" , which is using electricity to to split molecules. e later created laws of this field. -
Robert Andrews Millikan
atomictimeline Millikan used a "drop oil" Expiriment to find the charge of the electrons. -
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Joseph John Thomson
The Atom JJ Thomsom understood that electrons had a negative charge and protons needed to be present to make an atom nautral. His main achievment was the discovery of the electron, and the reation of the plum pudding model. Also used cathode rays -
Marie and Parrie Curie
[atomictimeline](atomictimeline.net)Studied Radioactivity of uranium to find "decay time". -
Max Planck born
atomictimeline
Max explained hot glowing mater with dicreate measurements. (quanta). -
The Plum Puding Model
atomic-theory JJ Thomsons atomic model. The Positive charged and negativly charged particles Protons and electrons are mixed together in the atom. -
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Albert Einstein
He Brilliently came up with E = mc2 which helped prove the exstene of atoms making up matter. -
The Planetary Model
Rutherford-model This model exibited electrons orbiting the nucleous.and concluded that the protons were in the neucleous. -
Ernest Rutherford
atomictimeline Rutherford used his gold foil experiment to discover the center of the atom, the Neucleous, which has the most mass. -
Quantum Mechanical model
Bohr model This model was created by Bhor, who disagreed with Rutherford. Bhor explained there was only certain energy levels for a reason which gave only a certain amount of energy. -
Niels Henrik David Bohr
atomictimeline Bohr created his own atomic model. this model contained orbital electron shells. -
Louis de Broglie
atomictimeline Broglie supported the work of Einstine. he also explains a theory of atomic structure that is connected to the periotic table of elements -
The Electron Cloud Model
www.msnucleus.org Model created by Erwin Schrodinger. This model explain that the electron cloud had rough orbits that the electrons traveled. -
Erwin Schrödinger
atomictimeline Schrodinger believed the theory of electron clouds, and wave mechanics. -
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Lise Meitner
"heavy elements capture neutrons and form unstable products which undergo fission." (http://atomictimeline.net/) -
Glenn T. Seaborg
atomictimeline He came up with more elements that were "transurainium" And sugested an adjustment to the periotic table's layout -
Aristotle born
atomicmodelhistory.wordpress.com Aristotle believed in four elements, Water, Earth, Fire And Air. Every single thing was made out of a combination of those four.
