Patriotic colors
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A colorful way to interest students in chemical solutions, solubility, crystals, pH, and acid-base reactions. Red and blue will appear and disappear as you use phenolphthalein and thymolphthalein indicators to demonstrate classic acid-base and precipitation reactions. This set is great for use by students individually or as a classroom demonstration. It comes with enough materials for 30 students, an instruction/activity booklet, and student quiz.