What Did Aristotle Contribute to the Understanding of Atoms?

Aristotle's contribution to the understanding of atoms was to help dispel the commonly held belief of his time that the indivisible building blocks of matter were uniform in nature and had no unique or characteristic properties. He argued that the atoms of a specific substance must instead maintain the unique properties of that substance rather than all atoms remaining similar in nature. Aristotle also noted that some substances appeared to be pure and that others were formed from the combinations of these pure substances, an observation which led to the understanding that elements could be combined to form compounds with new and unique properties.