Hot Ice Crystals by Thames and Kosmos

These amazing crystals form instantly out of a sodium acetate solution. They look like ice but they release heat upon formation. Use the solution to mold a beautiful crystalline polar bear and seal. Create an elegant crystal castle with shimmering spires. Learn about the chemical reaction that makes this happen. These amazing crystals are formed instantly out of a sodium acetate solution Ages 8+, includes a full color 16-page instruction manual and experiment guide An exothermic reaction is a chemical reaction that releases energy by light or heat A beautiful crystalline polar bear and seal mold is included Create an elegant crystal castle with shimmering spires and learn about exothermic reactions