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The History of the Atomic Model

Democritus
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Atomic Theory

In the fifith century Democritus was the "competiotion" to arostotle, though at the time his model of the atom was not accepted today we know he was on the right track.
 
He said that all things are made up of tiny particles called atoms. 
All atoms were made up of the same componants but each atom had a different size and shape
He also belived that atoms could not be broken down
 
Most of what he said was correct except for his statement about atoms not being able to be broken down.  Less than 100 years later his theory would be overshadowed by that of Aristotle

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