Liquid Nitrogen Demos

We look at how different materials change when they are exposed to liquid nitrogen. Flowers become frozen and stiff and the petals snap. A banana hardens and is strong enough to be used as a hammer and a squash ball becomes very brittle and shatters when it is hit. Chemistry - Atoms And Bonding - Learning Points. The boiling point of nitrogen is -196°C. Plants and animals consist mostly of water. Ice has a rigid, hexagonal structure. The more a substance is cooled, the less the particles in it will move. A Twig Experiment Film. Let students experience real experiments in lab conditions anywhere, from setup, method all the way through to analysis and real-world application.