Hot ice, scientifically known as sodium acetate, is a liquid that will turn solid at the slightest provocation. Touching it with your finger or bumping it too hard will cause it to spring from a clear, water-like state into solid ice-like crystals.
This would be a great experiment for elementary school students. Apple rotting experiment - check out this apple science activity and see what happens to apples left in air, water, vinegar, and oil for a w.
6 snow science experiments for kids. Winter STEM activities encourage curiosity, love of nature and science. Kids learn to hypothesize, observe, record result, and make conclusion. Fun outdoor and indoor kids activities for cold winter.