Demonstrations are a cornerstone of chemistry outreach. We can illuminate the sometimes dry discussion of chemical concepts and reactions with practical and exciting examples. From dramatic exothermic reactions to color changes to ice cream made with liquid nitrogen, we've recorded many of our live demos right here for your use and enjoyment.
Hydrogen is the first element on the periodic table. The element itself forms into the gas H2. Just like other gasses, pressurized H2 can be used to propel a projectile. Since hydrogen is less dense than the surrounding air, greater compression can be achieved. Also, H2 molecules have a low mass and can travel faster than typical gas molecules (such as the main components of air, N2and O2). These properties both increase the force that H2 cannons can impart onto projectiles! Unfortunately, the principals involved here did not improve our cannon's aim.