KI + H2O2

Voici la fabrication de la “merde d’éléphant” par le mélange de peroxyde d’hydrogène de d’iodure de potassium. On peut aussi ajouter des colorants au mélange.
Video Rating: 5 / 5

Several measuring cylinders are set up each containing a little washing up liquid and a small amount of a catalyst for the decomposition of hydrogen peroxide. Hydrogen peroxide is poured into the cylinders and a foam rises up the cylinders at a rate that depends on the effectiveness of the catalyst.
Video Rating: 4 / 5