You are going to love this baking soda science experiment. Science experiments for kids are always fun and this rainbow science experiement will definitely catch the kids attention. Children as young as toddlers and preschoolers will love this erupting rainbow activity!
We do rainbow fizz in a burette. Half fill with acid, couple drops of UI and then fill with the same molar sodium hydrogen carbonate solution. 0.5M works well every time but make sure the NaHCo3 solution is fresh and do it in a tray