EpicScience - Elephant Toothpaste vs. Baking Soda & Vinegar

This lesson explores different physical and chemical properties of substances with similar appearances - two different green liquids mixed with two different white solids. The first reaction mixes vinegar and baking soda, producing carbon dioxide gas and causing the flask to slowly foam over. The second combines hydrogen peroxide and potassium iodide to make a much more exciting elephant toothpaste reaction.

[@maliyahhowell1296]

What was the measurement for the potassium iodine/ water and 30% hydrogen peroxide you used?

[@maliyahhowell1296]

What kind of soap did you use?

[@mariadavis2712]

Nice! What percentage hydrogen peroxide are you using?

[@epicscience]

I use 30% for science demonstrations, but there's an "at home" version with safer materials that uses 12% with yeast instead of potassium iodide.

[@TkoBallerx]

Where can I buy Potassium Iodide?

[@epicscience]

You can get it in small quantities here: www.homesciencetools.com/product/potassium-iodide-30-g/

[@Marwagamal907]

If I have H2O2 10%, can I use it instead of the 30% with KI too ??

[@mariafernandamartinez0247]

oh, that's cool!