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In this project, find out ifhydrogel polymer crystals cankeep items coolerfor a longer period than the same amount of crushed ice.A special kind of polymer called a hydrogel superabsorbent crystal is able to absorb water, and swell to many times its original size. Does this absorbency mean that the crystals will stay cold for longer than ice? Let's find out!
Hydrogel superabsorbent crystals
4-mil re-sealable sandwich size freezer bags
Two small medicine thermometers
Watch or clock
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Fecha publicación: 12.5.2016
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