5. Elephant toothpaste / big bubbles
.How to do the free wound, hydrogen peroxide (H2O2) concentrate 10-50% poured into a test tube. Then add dishwashing liquid down. Don't people (I used to Li PON f) ratio, hydrogen peroxide, and not about 3:1 (want the color will add food coloring. "). Then add the potassium iodide (KI) in, the foaming gas arises out of a test tube). Squeeze toothpaste from the tube (look like large) if it big bubbles.Gas bubbles filled trays look away, like a large bubble experiment done ask children. See if not add dishwashing liquid, what questions can try it (see children.)
.Explain what happens when adding potassium iodide into the solution of hydrogen per oxide as catalyst. KI will will. H2O2 breakage on oxygen. The members to below.O2 happened to become the bubble itself (in the dishwashing liquid are substances that bubble, if not add dishwashing liquid O2 happened to see a steam ejected from)
.Picture.
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