ATOM HISTORY

DEMOCRITUS

INFO

• Divided aluminum until he thought he had one atam.
• All things are made of atoms.
• Atoms model

ARISTOTLE

INFO

• Observed the world around him
• He said that there was form and matter in everything.
• He thought that everything was made of earth, wind, fire, and water elements.

DALTON

INFO

• The billiard ball theory
• The atom is the smallest particle of an element. Atoms of DIFFERENT elements have different masses.

JJ THOMAS

INFO

• He watched the pattern when he shot something at stuff.
• Magnet and electric field reflect in a mathematical way.
• Plum pudding theory

MILILAKIN

INFO

• Oil drop experiment
• Mass/charge of an electron
• Alpha

RUTHERFORD

INFO

• Gold foil experiment
• The nuclear model
• Positively charged nucleus

CHADWICK

INFO

• Proton-neutron model