Make colorful, worm-like gels by combining two solutions; sodium alginate (from seaweed) and the salt, calcium chloride. The calcium ions from the salt loosely bind the polymer alginate chains into a gel. With the addition of Red Cabbage Extract, students can watch the color-changing gel as it forms. The kit includes instructions, one liter of sodium alginate solution, calcium chloride salt, cups, forks, droppers, and a plastic tub. Enough for five stations.
Alginate Worm Kit
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