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-Relieved in the four elements of air, earth, water, fire
-He had no method -
- Matter could not be divideed into smaller pieces -He used his ideas
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-All matter is made of atom
-He proposed the Atomiv theory of matter based on his experimental observations -
-he discovered nucleus
-the atom has a positive nucleus with negative electrons orbiting around it -
-a new atom model that would allow the electrons to be outside the nucleus and in orbit around the nuclues
-the electrons were on a orbit -
-an equation
-electrons move when in an atom -
-the electron using the cathode-ray tube
-a mass spectrograph which found isotopes
