How to Make a Volcano That Explodes
Basic model volcanoes using baking soda and vinegar for lava have been a staple of science fairs for many years. The issue here is that although these are great fun to make and erupt, the reaction is not an accurate depiction of how volcanoes work and the explosion is just not big enough. In order to make a volcano that explodes properly, you will need to use some similar techniques and have access to some chemicals that actually react in real volcanoes.
Instructions
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Turn a large tin can, about 4 inches in diameter, upside down and place a smaller can, about 2 inches in diameter, the right way up on top of it.
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2
Make the shape of the volcano around these two cans using tin foil so there is a solid structure on which to work. Make sure a gap is left at the top so the small can, or crater, is accessible.
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3
Roll out some brown modeling clay into thin layers and place around the tin foil to make the volcano look more realistic. Modeling plaster could also be used and painted the correct colors afterwards.
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4
Mix together the sulphur and ammonium dichromate in equal measures and pour into the volcano crater. The more used, the bigger the explosion.
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5
Light a match and throw it in the crater. After a little while the chemicals will react creating sparks and will eventually explode.
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Tips & Warnings
If possible do this demonstration in a well ventilated room with low lighting so the full effect can be experienced.
This basic model for the volcano can also be used for the baking soda white vinegar eruption.
Only conduct this experiment outside or in a well ventilated room due to the fumes produced by the sulphur.
Never let children conduct this experiment by themselves.
Be very careful when handling chemicals like sulphur and ammonium.
References
- Photo Credit NA/AbleStock.com/Getty Images
