Mix hydrogen peroxide and potassium iodide inside a jack-o-lantern, and watch as the foam fills the pumpkin and erupts out of the eyes, nose, and mouth.
Demonstration only; should only be performed by an adult.
Comes with complete instructions and explanation of the science behind the fun.
Demo Pack includes: 150 mL beaker, 1 portion cup, 1 craft stick, 2 oz hydrogen peroxide, 10 g potassium iodide powder
5-Demo Pack includes: 150 mL beaker, 5 portion cups, 5 craft sticks, 10 oz hydrogen peroxide, 50 g potassium iodide powder