Chemists and physicists spend a lot of time thinking about what things are made of. You've probably heard of atoms and molecules. You may know about protons, neutrons, and electrons. But what are these tiny particles made of?
Check out this page for amazing illustrations of atoms, some funny cartoons, and some pretty cool information about quarks, leptons, and force carrier particles.
For more information on atoms, molecules, and chemistry-try these books:
Chemistry, by Ann Newmark, Dorling Kindersley, 1993
Chemistry: The Birth of a Science, by Tom McGowen, Franklin Watts, 1989