888CHEM
Memory Lane: Come to the chemistry show
Of that list, the flames and explosions were what got the attention of students. That reinforcing audience feedback led me to do bigger, greater spectacular demos. The methanol cannon, which was applied to discuss flammability and explosion limits, was one I specifically remember. What started as a small cannon made with a 250 mL plastic bottle and a cork projectile, that on ignition, would pop the cork 15 feet (4.6 m) across the room, grew into a 6-foot (1.8 m) section of polyvinyl chloride, or PVC, sewer pipe with a 10-inch (25.4 cm) Nerf ball in the muzzle that would go greater than 50 feet (15 m)!
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