Hot ice, scientifically known as sodium acetate, is a liquid that will turn solid at the slightest provocation. Touching it with your finger, bumping it too hard, or speaking a few angry words will cause it to spring from a clear, water-like state into solid ice-like crystals.
Need a light? Use potato power! With this science experiment for kids, learn how chemical reactions take place between two dissimilar metals and how to create voltage. This is a classic STEM activity that's sure to please :)