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460
THE FIRST THEORY
THE FIRST THEORY ABOUT ATOMS WAS MADE BY DEMOCRITUS IN THE YEAR 460BC HE WAS A SCIENTIST AND THOUGHT THAT IT WAS JUST A BALL SIZED SHAPE THAT WOULD BE THE SMALLEST THING OF AN ELEMENT.AFTER HIM WAS DALTON WHO SHARED THE SOME IDEA IN 1803 -
Period: 460 to
THE ATOMS THEORY TIME LINE
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THE THIRD THEORY
THE NEXT PERSON TO GIVE A MORE AND CLOSER VERSION OF WHAT WE NOW ABOUT ATOMS IS THOMPSON HIS IDEA WAS THAT THE ATOM WAS LIKE A PLUM PUDDING AND THAT THE OUTER LAYER WAS POSITIVLY CHARGED AND INSIDE WAS BLANK SPACE BUT HE SAID THERE WER NEGETEVLY CHARGED ATOMS CIRCULATIN IN THE INSIDE -
THE FOURTH THEORY
THE FOURTH PERSON TO GIVE A MORE PRESISE THEORY WAS RUTHEFORD HIS THEORY WAS THAT THERE WAS A DENSE CENTER TO AN ATOM HE SAID THAT AFTER DOING AN EXPEREMENT USING GOLD FOIL AND SOME GLASS AND SOME CUBE THE IDEA WAS THT THE LITE WOULD PASS THROUGH THE FOIL BUT SOME OF THE RAYS WENT BACK THE OTHER WAY -
THE LAST THEORY
THE LAST THEORY WAS MADE BY BOHER HIS THEORY WAS THAT THERE WERE MORE TAN TWO ELECTRONS IN AN ATOM AND THEY DID NOT HAVE A DEFINIT ORBIT
