Gr 5-8 Like the authors' Adventures with Atoms and Molecules (Enslow, 1985), this volume of experiments further introduces chemistry to upper elementary readers. There are 30 new experiments, each followed by one or more ideas to investigate. The experiments present many scientific principles through the safe use of ingredients found around the house. Safety is a prime consideration. Cautionary statements are printed in boldface type. The acids are weak, such as lemon juice and vinegar, and the strongest base is a solution of calcium hydroxide purchased in the grocery store as ``pickling lime.'' The format matches that of the first volume. The experiments are illustrated with computer-generated black-and-white drawings. It is rare to find a book that illustrates the principles of chemistry as clearly and with as much enthusiasm as this. All libraries serving children will want to have this book and its predecessor; school libraries will want to order additional copies for teachers' collections. Margaret H. Hagel, Norfolk Public Library System, Va.