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332
aristotle
HE beleive that matter was made up of fire, water, air, and earth -
400
democritus
He thought that cutting thing into smaller and smaller pieces which they call it indevincible. -
dalton
stuff can be broken into elements. elements are atoms with different mass compounds are a combination of elements.he did the law of composition,law of simplemultiple poportions.http://dl.clackamas.cc.or.us/ch104-04/dalton's.htmDalton's Model, Hard Sphere Represented -
thomson
he discover that there are elevtrons and that heat is generated and bend. he also he did the plum pudding model.http://scienceblogs.com/dotphysics/2009/09/04/the-development-of-the-atomic-model/ model atom thomson dianalogikan sebagai -
rutherford
he discoverd the nuleus, he use the gold foil experimenthttp://scienceblogs.com/dotphysics/2009/09/04/the-development-of-the-atomic-model/
Ernest Rutherford Publishes His Atomic Theory -
bohr
a small positively charged surrounded by electrons that travel in orbitais around the nucleus.Proposed that energy levels of electrons are discrete.http://scienceblogs.com/dotphysics/2009/09/04/the-development-of-the-atomic-model/ atom model niels bohr bohr s model was -
heiseberg and schrodinger
heisenberg kept eplaining the next and next level of energy level.Schrodinger model of an atom of interacting waves which he showed by using math.http://timelineoftheatom.blogspot.com/p/erwin-schrodinger-1926.html
Erwin Schrodinger developed the equation