... Robert, 1929– Chemistry science fair projects using french fries, gumdrops, soap, and other organic stuff / Robert Gardner and Barbara Gardner Conklin p cm.— (Chemistry! best science projects) Includes ... Chemistry! BEST SCIENCE PROJECTS Using French Fries, Gumdrops, Soap, and Other Organic Stuff Robert Gardner and Barbara Gardner Conklin Copyright © 2004 by Robert Gardner and Barbara ... covalent bonds? 39 Chemistry Science Fair Projects Experiment 2.3 Models of Other Organic Molecules Materials ✓ ball -and- stick chemical models or gumdrops and toothpicks ✓ pen or pencil and paper One...