jan 1, 400 BC - All matter consists of small particles called atoms -Atoms are indestructible -Atoms are solid but invisible -Atoms are homogeneous -Atoms differ in size, shape, mass, position, and arrangement -Solids are made of small pointy, atoms -liquids are made of large round atoms -oils are made of very fine, small atoms that can slip past each other
Added to timeline:
Date:
jan 1, 400 BC
Now
~ 2428 years ago