Demonstrate classic acid-base and precipitation reactions with this colorful kit. Using phenolphthalein and thymolphthalein indicators you can make the colors red and blue appear and disappear. Whether you use the experiment as a classroom demonstration or a hands-on student activity, students will learn about chemical solutions, solubility, crystals, pH and acid-base reactions. Includes materials for student groups, a teacher’s guide with activities, a student quiz and an MSDS sheet.