-
101
Thales of miletus
600 BC declared all life came from (everything made of water) -
360
aristatle
thought everything was earth, fire, air, and water -
500
democritus
thought everything was made of atoms -
Isaac Newton
thought atoms moved around and were small -
Dalton
Atomic Theory -
Bequerel
discovered radioactivity -
JJ Thompson
discovered electron -
Ernest Ruthaford
atoms containa nucleus made of protons surrounded by electrons -
Robert Millikan
determined the charge and mass of electron -
Bohr
everything was on pathes and couldnt be in between -
Francis Aston
discovered and studied isotopes -
Schrodinger
used math equiations to describe where electrons will probably be -
James Chadwick
discovered evidence of there being a neutron