CK-12 Foundation
Ck 12: Life Science: 2.1 Elements and Compounds
Learn how basic elements form molecules to support life.
Science Bob Pflugfelder
Science Bob: Homemade Slime!
Contains a procedure for creating slime -- a polymer formed by mixing water, borax, Elmer's glue, and food coloring. Following the procedure, the site contains a brief description of what polymers are.