The science of slime! Our Copernicus Toys fan favorite hands on explorations of states of matter, the chemistry behind gels, polymers, and phosphorescence. Experiment making glow-in-the-dark gel, a putty substance that flows and stretches, breaks and bounces, eco-foam fizzle, and much more. 15 experiments in an awesome 6x4x4" box. D: 4.00.