References

1. "Teaching Chemistry with Toys: Activities for Grades K-9." Jerry L. Sarquis, Mickey Sarquis, John P. Williams, McGraw-Hill. ISBN 0-07-064722-4
2. "How Science Works." Judith Hann, 1991, Dorling Kindersley Limited, London. ISBN 0-7621-0249-7
3. "Science Is . . . A Source Book of Fascinating Facts, Projects and Activities." Susan V. Bosak, Scholastic, 1991. ISBN 0-590-74070-9
4. "The Science Explorer: Exploratorium." Pat Murphy, Ellen Lages, Linda Shore, and The Exploratorium, Henry Holt and Company, 1996. ISBN 0-8050-4536-8
5. M. Bailey, OSU Chemistry Dept. Demonstrator.
6. Department of Chemistry, The Ohio State University.