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Liz Elias from Oakley, CA on December 20, 2012: Basic ideas regarding genetics and chemistry were determined long before anyone had an understanding of how DNA works or how atoms share electrons. Many of the great scientists of old based their theories on experiments, and the mathematical basis wasn't determined until a later point in time. I don't believe there are any "childish" experiments - a lot of theoretical science is accessible to everyone, because you don't need an understanding of quantum physics to get the general gist behind the ideas. I really had to work hard at the higher math concepts. I was always stronger with English and the Biological Sciences than with math. There is baking soda and foam all over the table, RTalloni!įun stuff! Thanks for this tutorial. Leah Lefler (author) from Western New York on December 20, 2012:
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Hello, Josiah - the volcano can be any size, adjusted by the quantity of salt dough you are willing to make. Leah Lefler (author) from Western New York on January 26, 2018: Salt dough can also be baked to expedite the drying process. This may speed the drying process of the salt dough. Question: Is it fine to put a heater in front of the volcano while it dries?Īnswer: It is fine to put a heater in front of the volcano while it dries. The best reaction will occur using baking soda (pure sodium bicarbonate) and vinegar (acetic acid). If you use baking powder in your volcano model, simply use hot water to cause a reaction instead of vinegar. Question: Can I use baking powder instead of baking soda when making a salt-dough volcano?Īnswer: Baking powder is slightly different from baking soda, as it contains acid in the formulation in addition to sodium bicarbonate. When ready to cause the reaction, add the dissolved yeast to the hydrogen peroxide in the volcano and stand back! Add 1/2 cup of hydrogen peroxide to the volcano with a few drops of food coloring and a few drops of liquid dish washing soap. To perform the experiment with hydrogen peroxide and yeast, add 1 teaspoon of yeast to 2 tablespoons of warm water to allow the yeast to activate.
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While the classic chemistry experiment uses potassium iodide, it is possible to make a safer version for children using hydrogen peroxide and yeast. Question: Could you use elephant toothpaste to have more fun with this salt-dough volcano?Īnswer: You may absolutely use "elephant toothpaste" in a salt dough volcano. Air-dry clay is also easy to work with, but is expensive to purchase. Plaster will take longer to dry, but is also an easy option. Question: What is the best thing to make a model volcano out of?Īnswer: Salt-dough is the easiest material to make a model volcano. The reacting vinegar/baking soda mixture will be contained using this strategy and you won't have to sacrifice a baking dish for the duration of the project. An alternate plan would be to use a cardboard box with aluminum foil lining. Question: Instead of using a baking dish, could you use a paper platform to make a salt-dough volcano?Īnswer: You can use a paper platform for your volcano, but be aware that when you add liquid the "lava flow" will saturate the paper and could leave you with a big mess.