"This is just like being a REAL Scientist!" An amazing reaction in a ziplock bag...woah...a vivid color changes...double woah...extreme temperature changes...and ends with an exciting surprise! This classic reaction is such a wonderful experience for young learners to make scientific observations, view changes and record findings! This safe, non-toxic and easily disposable hands-on experience maximizes excitement! Get BOTH powerful Science in a Bag projects in this bundled package! This powerful chemical reaction is an amazing way to explore the evidences of a REAL chemical reaction!