HYPERLINK "http://wind.cc.whecn.edu/~mechalke/chapter5/Chapter5.htm" INCLUDEPICTURE "http://www.school-forchampions.com/science/images/atom-sodium_shells.gif" \* MERGEFORMATINET HYPERLINK "http://www.windows.ucar.edu/tour/link=/cool_stuff/images/electron_cloud_jpg_image.html"
5th Century B.C. ____________ all matter is composed of indivisible particles called ______
1803
1897
1908-1913
_________
_________
Billiard Ball Model the atom is a small solid
Plum Pudding the atom is mostly ______space with Model the atom has a dense positively charged center positive and surrounded by __________ negative ________ parts
_________
_____________ Solar System Model
1920+
____________ Electron Cloud Model is a dense center composed of _________ and neutrons surrounded by electrons in a ___________