Elephant Toothpaste vs. Baking Soda & Vinegar

This lesson explores different physical and chemical properties of substances with similar appearances - two different green liquids mixed with two different white solids. The first reaction mixes vinegar and baking soda, producing carbon dioxide gas and causing the flask to slowly foam over. The second combines hydrogen peroxide and potassium iodide to make a much more exciting elephant toothpaste reaction.