This is a classic demonstration that illustrates the power of atmospheric pressure. A small amount of water is heated in a pop can. The can is inverted and submerged in ice-cold water. As a result, the pressure of the gas inside the can is quickly reduced dramatically crushing the can by the pressure of the atmosphere.
Categories: Teacher Demonstration
This demonstration is a great way for students to model the stages of mitosis. Images of the different stages in textbooks are static snapshots and many students have difficulty grasping the idea... read more
Chemists are constantly faced with the daunting task of counting large numbers of items, specifically atoms, ions, molecules and compounds. This task is made even more difficult by the fact that not... read more