Thames & Kosmos 575002 Ooze Labs Fast-forming Hot Ice Crystals

Description: Thames & Kosmos 575002 Hot Ice Crystals Experiment with instantly forming sodium acetate crystals that produce heat. Ooze Labs are fun and simple science experiments in big chunky plastic test tubes! Each Ooze Lab tube contains a simple science experiment to create a safe material that is both fun to play with and chemically interesting. Ages: 6+