How about we play a game: The first person names a chemical substance and gives an overview as to all the ways in which it is dangerous. The next person then has to come up with something even more dangerous. Physical dangers (usually stored in pressured containers, inert gas that presents a danger of asphyxiation, …) don’t count, and the same holds for anything regarding radioactivity. Also: Huge bonus for diversity and practical danger: A lot of substances can explode, but ones that do it without much convincing and produce poison-gas, or fires that are inextinguishable, or cause cancer, yet are stable enough to actually see real world use are much more interesting. #chemistry