-
101
Thales was in 624 B.C.
Thought all things were mad of water -
102
Democratis was in 460 B.C.
First person to think of the atom,thought it was a solid sphere -
103
Aristotle was in 384 B.C
Believed the elements were earth,wind,fire,and water. -
Isac Newton
Stated that matter is formed of solid,mass of impenetrable atoms. -
John Dalton
Found the law of fixed proportion and first to nhave actual evidence. -
Henri Becquerel
Discovers radioactivity -
J.J. Thompson
Discovered electrons -
Ernest Rutherford
Discovered the nucleus. -
Millikan
Found the charge of an electron. -
Niels Bohr
Thought electrons orbited the nucleus. -
schrodinger
Predicted the odds of electron location. -
Chadwick
Proved neutrons exist.