Democritus

= = Picture of Democritus and his atomic model.

[[image:http://cdn.timerime.com/cdn-3/upload/resized/13749/154564/resized_image2_1b112981c9811ea799a9c40d8b755fe9.jpg width="240" height="225"]]
Time peroid it was discovered. 442BC

Description of his model. He thought the atom was like a small metal ball

Compare and contrast. same-believed atoms made up all matter, believed atoms always moving, everything is made up of atoms different-believed atoms were indivisible, came in different shapes and sizes, could not be created, space between atoms determined size

How it was an improvement over the previous model. Democritus said that all things have atoms moving inside them so he used a metal ball as his example of that all things have atoms in them and they are moving compared to Aristotle's model where he said that all objects cant have atoms moving inside.