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Dalton
His thoery says that when making a compound, the elements need to be combined in certain porportions. -
Thomson
Thomson proved Daltons theory wrong, atoms can be split into smaller parts. -
Rutherford
He conducted a exparement by pointing a beam of positivly charged particals at a thin sheet of gold to see where they would go. -
Rutherford
He proposed that in the center of the atom is a tiny extremely dense positivly charged part called the nucleus. -
Bohr
He studied the way that atoms react to light. He propose that electrons move around the nucleus in certain paths or energy levels. -
Schrodinger and Heisenberg
They discoverd electron clouds -
400 BC Democritus
He made the discovery of atoms. In his theory atoms can not be cut. -
384 BC Aristotle
He believed that you would never end up with a partical that could not be cut
