This 5-minute video explores a story about Dmitri Mendeleev and the discovery of radium. The "father of the periodic table" accurately predicted the properties of three elements before they were discovered. However, he never accepted the properties of radium, since the idea that it glowed in the dark challenged his own beliefs.
This is an entire periodic table, with videos about each element. These videos are chemistry adventures in the laboratory, as well as journeys into the world, to learn more about the unique qualities of each element.