Scientists Flashcard

Bohr
Put neutrons in planetary motion model
Chadwick
Discovered neutron
Democritus
First suggested existence of tiny particles
Dalton
Father of modern atomic theory
Dalton
Created atomic theory
Dalton
Atom is a solid, indestructible sphere
Crookes
Investigated why gases glow
Crookes
Created Cathode Ray tube
Crookes
Created precursor to the TV tube
Thomson
Discovered electron
Thomson
Plum Pudding Model
Millikan
Determined charge on a single electron
Thomson
Charge to Mass ratio
Millikan
Oil drop experiment
Roentgen
Discovered x-rays
Becquerel
Disovery of radioactivity
Becquerel
Fogging on photo plates
Becquerel
Fogging on photo plates
Curie (marie)
Discovered polonium
Rutherford
Planetary motion model
Rutherford
Discovered nucleus
Rutherford
Gold Foil Experiment
Geiger
Student of Rutherford
Geiger
First Electric Particle Counter
Geiger
Determined alpha partiles had 2 protons and 2 neutrons

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