Chemistry
From Tardis Wiki, the free Doctor Who reference
Chemistry was the science of matter. Ian Chesterton taught chemistry at Coal Hill School, although his lessons were too simple for his student Susan Foreman. (DW: An Unearthly Child) Ace liked chemistry, especially the creation of explosives. (DW: Dragonfire) Vicki Pallister studied chemistry at the age of ten for an hour a week using a machine. (DW: The Web Planet)