Patriotic Colors Chemistry Experiment Kit Concepts: solutions, reversible chemical reactions, solubility, precipitate, indicators, pH, neutralization, acids and bases, titration models, analyze, and control of variables Turn 3 colorless liquids into red, white and blue. Make the colors disappear and reappear. Do the famous Disappearing Ink tricks, make test papers. Learn about the chemistry behind solutions, precipitates, acid-base reactions and pH. Contains: phenolphthalein and thymolphthalein solutions (1 oz), sodium carbonate (1 oz), citric acid (1 oz), calcium chloride (1 oz), pipet, stirrers, spoon, small scoop, cups and instructions. Note: phenolphthalein requires a health warning, but is safe used as directed. These science kits are the most completely thought out and clearly presented kits we have found. The kits are all lots of fun and you learn a lot about the concepts you are using.. They are packed with clear instructions about the activities presented and thoughtfully explain the chemistry concepts behind each experiment. All the kits come complete with everything you need (you may need to provide water). Ages 8+ with adult supervision.