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370
Democritus
The year Democritus dicovery was made in 370 BC He discovered the atom was unbreakable into smaller parts , and he was the first one to discover atoms The method that he used was ripping a paper to the smallest and see what does it end with and the finial ending was the smallest He thought that it ended at some point , a smallest possible of matter ,he called these basic matter particles atoms. -
Period: 370 to
Year
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Dalton
The year Dalton made his discovery was in 1803 He discovered elements were consisted of tiny particles called atoms The method he used was gathered evidence from experiments He thought his atom looked like an billiard ball -
Thomson
The year Thomson discovery was made in 1897 He discovered the electron in a series of experiments designed The method he use to make his discovery is plum pudding He thought the atom looked like plum pudding -
Bohr
The year Bohr discovery was made in 1912 He discovered energy levels of electrons are discrete and that electrons revave in stable orbits around the atomic nucleus but can jump from one energy level to another The method he use was quantom theory He think the atom looked like a solar system -
Rutherford
The year Rutherford made his discovery was in 1919
He discovered gold atoms were deflected off of tin foil,some of them must have bounced
The method he used to make his discovery was Goil Foil experiment
He thought the atom looked like protons in then nucleus & the electrons orbited around the nucleus -
Schrodinger
The year Schrodinger discovery was made in 1926 He discovered the electron cloud model theory The methood he used to make his discovery was wave-mechanical He thought the atom looked like a subsmell
