Investigation elephants toothpaste

What were you investigating? What happened when you mix a catalyst with hydrogen? Things you will need: a 16ounce bottle then a jug of warm water safety goggles half a teaspoon of yeast some hydrogen peroxide and washing up liquid. Instructions get the warm water in the jug then mix it with yeast then put hair dye in to the bottle with washing up liquid next pour the mixed water and yeast into the bottle then stand back when the foam comes up because the foam must not be touched and wear safety goggles at start if you are under year 5 ask a adult for supervision from the foam because the foam is dangourus. I predicted that the foam will go really high if it does get into shelter and watch through the window. While doing this experiment wear safety goggles at all times and put a big lid underneath the bottle you are using to stop the foam going on the floor. At the end it was a weak one but the first time it was really strong last one was a weak fountain and the first one was like a extinguished fire.

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