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Historical development of the atom
Democritus history of the atom
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The model of the atom has been changed many times over the course of history, updating from a theory about cutting things in half to an atom with protons, neutrons and electrons.
The earliest known model of the atom is credited to Democritus and his mentor Leucippus in the fifth century BC. This model explained that everything was made up of tiny, indestructible atoms. Democritus did not perform any experiments to prove the atom existed, but theorised that although the atoms remain unchanged, they combine in various ways to form objects. It is believed that he founded his theory on the idea that after cutting an object in half until it couldn’t be cut again, the material left must be what he
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