Chemistry+History+of+the+Atom

__History of an Atom.__ 602,200,000,000,000,000,000
 * 1g or H= 6,022 x 10 to the 23rd power atoms

__Democritus- c. 400 BC__ __Dalton- c. 1700 AD__ __Thompson, JJ- 1897 AD__ __Rutherford- 1906 AD__ __Modern Ideas__
 * atomis = not divisible
 * aristotle --> earth, air, fire, water
 * prime parts
 * each had shapes that gave them properties
 * C.R.T
 * cookie dough model - positive and negitive parts
 * electrons- something smaller than atoms
 * gold foil experiment
 * empty space with dense cores
 * neutron - added mass
 * electrons exsist in orbital/clouds

*many more sub subatomic particles.

-sydnie ross.