Atomic Theory
JJ, Thompson
John Dalton
The Four Elements
Bohr-Rutherford
Water
Fire
Earth
All atoms of the same element are identical in mass size and other properties
in chemical reactions atoms are separated, combined, and/or rearranged
Atoms cant be divided, created nor destroyed
Atoms combine in whole number ratios to create compounds
All matter is composed with atoms
Democritus
He disagreed with the four elements, but no one believed him
Discovered a particle smaller than the atom called a corpuscle.
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Ernest Rutherford
He disapproved Thompson's plum pudding model with the gold foil experiment
Wind
A Greek Theory
The model is incorrect
The atom consist of a positively charged nucleus that are orbited by negatively charged electron in different energy level
Easiest way to draw the model
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