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Aristotle
he discovered stuff can be broken into elements, Elements are atoms with diffrent masses. His method was observation.He believed that all substances were made of Fire, Water, Air, and Earth. aristotle
http://profmokeur.com/chemistry/history_of_the_atom.htm -
dalton
dalton stated, " Elements are atoms with different masses." dalton also stated," Atoms are small things with different mass and also different property. WWW.universitytoday.com
http://profmokeur.com/chemistry/history_of_the_atom.htm -
thomson
thomson Thomson discovered that atoms had electrons. Thomson took the idea of the atom & stated, " In this model, the electrons are the smallest things & the rest is positive matter. Also he stated," This is called plumb pudding." -
rutherford
Rutherford discoverd that atoms had electrons. He added electrons to the model of the atom. Rutherford used a method called the plum pudding model. Rutherford thought the atoms looked liked the solor system.
http://profmokeur.com/chemistry/history_of_the_atom.htm -
bohr
bohr
Bohr discovered that the had a postively charge nuclues. He used a quantized model of the atom to explain how electron have stable orbits around the nucleus. The atom look like a shell.
http://profmokeur.com/chemistry/history_of_the_atom.htm -
Schrodinger and heisenberg
schrodingerhe built off of bohrs model of the atom and created a mathmatical equation to show the disturbution of the electrons in atoms. he discovered you can find only the probability of where an atom can be, but it was not definite. the atoms look like a nucleus with waves around it.
http://profmokeur.com/chemistry/history_of_the_atom.htm -
democritus
he discovered that atoms were " uncutable"Democritus discovered the atom. he use the microscope method. Atoms were very small and visible. www.scienceog.com
http://profmokeur.com/chemistry/history_of_the_atom.htm
