When water is added to this granular white powder, it instantly expands to 40 times its original volume, producing a snow-like material. Great for showing that there is No Law of Conservation of Volume! This artificial "snow" is fluffy and can be readily poured. When wet, it adheres well to boots and is very slippery. Available from Educational Innovations, Inc. at http://www.teachersource.com/Chemistry/HydrophilicHydrophobicPolymers/Instant...
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