Elephant's Toothpaste in 2 Liter Bottle

Описание: Elephant's Toothpaste is a classic chemistry demonstration showing the reaction between hydrogen peroxide (30%) and a potassium iodide (KI) catalyst to form oxygen gas. The oxygen gas released is what causes the added soap to foam and expand rapidly. Food dye is added for fun. The narrow opening of the 2 L bottle allows for the foam to erupt high into the air as compared to a container with a wider opening. Enjoy!