-
101
Thales- 624BC
Thought all things were made up of water. -
102
Democritus- 460 BC
First person to think of the atom. Thought it was a solid sphere. -
103
Aristotle 384-322 Bc
Thought everything was made up of fire, water, earth, and air.
Didn't believe in the Atomic Theory -
104
Issac Newton 1702
Matter formed of solid, massy impenetreble particles -
105
John Dalton 1802
First to have experimental evidence of the Atomic Theory -
106
Henri Bacquerel 1896
Discovered radioactivity -
107
JJ Thomson 1897
discovered electron -
110
Niels Boehr 1913
Discovered how electrons trsvel around nucleus -
111
Francis Aston
Mass Spectrograph -
112
Schrodinger 1926
Schrodingers Model -
Robert Millikan
Found mass and charge of l -
Rutherford
Discovered nucleus