Here are 24 eye-opening experiments that take readers on an interactive journey through the periodic table of elements. Use a pinhead, a bar of soap, and 166 feet of string for a mind-boggling insight into how a hydrogen atom is built. Learn all about helium, then meet its relatives, called the noble gases. Harness the power of zinc with a potato clock. And enjoy a special added feature about the "dirty dozed"-those singularly nasty elements, from arsenic to plutonium. that can wreak havoc wherever they appear. (But no worries-there are no experiments using these chemiclas.) Matter really matters, and now you'll understand why.

For ages 9 and up.