-All matter is consisted of atoms
-Atoms cannot be destroyed
-Atoms cannot be seen.
-Atoms consist of the same parts and structuring
-Atoms are different due to their varying; shapes, masses, positions, and arrangements.
*Solids: Small, pointy Atoms
*Liquids: Large and round Atoms
*Oils: Fine, small Atoms that can slip past each other.
+His contribution to the theory was that he affirmed that the universe is composed of atoms and the void, they are in.