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====Discovery of Atoms====
: The existence and structure of [[atom]]s was not always known.
: An ancient Greek philosopher called [[Democratus]] first proposed that matter was made of [[atom]]s. He reasoned that if you keep cutting something in half eventually you will reach part of it which cannot be cut into smaller piece. The ancient Greek word for 'uncuttable' was [[atom]].
=====Dalton Model of the Atom=====
: It wasn't until the early 1800s that there was an [[Scientific Evidene|evidence]] based [[Scientific Theory|theory]] of the existence of an [[atom]]. It was proposed by [[John Dalton]] who suggested [[atom]]s were small [[sphere|spherical]] [[object]]s.