CHEM C500 Introduction to Chemistry. CHEM C500 takes you on an introductory tour through seven central areas in chemistry with more than 30 classic experiments. Learn about reactions between solids, liquids, and gases. Discover the colorful effects of acids and bases. Perform astonisishing "magic" tricks for your friends. Investigate metals and salts in electrochemical experiments with a 9-volt battery (not included). Learn for yourself how chemistry goes far beyond textbooks and laboratories, to explain occurrences that happen around us every day. The 32-page, full-color experiment manual gives simple instructions for setting up and performing each experiment, and then clear explanations of what happened and why. This kit is ideal for children who are interested in chemistry but who are not yet ready for a more advanced chemistry set. It serves as an excellent introduction to other kits in our CHEM line.