science part 3 foam

what u need: 1. 30 ml of hydrogen peroxide (h2o2) 2. any colorful iodine(kj) 3.potassium flask (its glass wessel where you put the above ingredients inside... see vid) 5.a small spoon Instructions take volumetric flask & pour 30 ml of the hydrogen peroxide. pour about 30ml of dish soap into volumetric flask. shake the flask well, so the peroxide and the dish soap mix. fill the small spoon with potassium iodin (kj) and pour the kj into the flask. shake flask so all ingredients mix well, and see the foam coming out. HAVE FUN!!!!!!!!!!!
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This is me and my M6A class doing the Ammonia Fountain lab. The volumetric flask (with an inserted glass tube/rubber stopper in its neck) contains a solution of water and phenopthalene and is heated until steam comes out the top through the glass tube. In the large beaker placed below the ring stand, this is a solution of water and ammonium hydroxide (which will be the ammonia solution). Once the flask gets heated and steam comes out, then I carefully (with gloves) invert the entire flask upside down so that its top, neck part is submersed into the ammonia solution contained in the beaker. Then, the pressure in the flask will be lower than the air pressure so that the ammonia solution in the beaker will be pushed upward into the flask to create a fountain effect. Then a color change is visible because the phenolphthalein in the flask changes from being colorless (acidic) to a purple color (basic).