Therefore, changes in matter were a result of dissociations or combinations of the atoms as they moved throughout the void. Although Democritus' theory was remarkable, it was rejected by Aristotle, one of the most influential philosophers of Ancient Greece; and the atomic theory was ignored for nearly 2,000 years.
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Propose that if kept cutting a substance in half forever, eventually you would end up with uncuttable pieces
So that we know what contribution did Democritus can you give one
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He called the particles atoms meaning indivisible in Greek
There more Democritus thought that atoms were, small hard particles of a single material and in different shapes and size
And he thought that atoms were always moving and formed different material by combining with each other.
Aristotle disagreed with Democritus idea that would end up with indivisible particle. Because Aristotle had a greater public influence, Democritus idea were ignored for centries