S1E7 - Episode #7 - Fluorine & Chlorine

We've got a double whammy for you this week! Fluorine and Chlorine are elemental cousins. They're both halogens, highly reactive elements that sit in the penultimate column of the periodic table. In this episode, we talk about why fluorine is added to water and chlorine's deadly use as a chemical weapon. Plus the usual games or Science Fact or Science Fiction and Secret Scientist!