The Elephant Toothpaste Challenge is a science experiment that creates a large foamy mess that looks like toothpaste being squeezed from a tube, but it is not toothpaste, so it should not be used as such. The experiment involves mixing hydrogen peroxide, dish soap, and yeast or sodium iodide solution, which creates a chemical reaction that produces a lot of foam. The materials needed for the experiment include:

• Empty plastic bottle
• Hydrogen peroxide (20-volume or 3%)
• Dish soap
• Yeast or sodium iodide solution
• Warm water
• Food coloring (optional)
• Safety goggles

The positive aspect of the Elephant Toothpaste Challenge is that it is a fun and engaging way to teach kids about chemical reactions and the properties of different substances. The negative aspect is that hydrogen peroxide can irritate the eyes, so safety goggles should be worn during the experiment. The ingredients used in the experiment are hydrogen peroxide, dish soap, yeast or sodium iodide solution, and warm water.