I have an A2 practical tomorrow (no idea on what it is) but I was told to revise recrystallisation, simple distillation, benzene chemistry and analytical techniques. I've, as anyone else would do, resorted to the text book given to me by my sixth form (and another one I bought on the web) - nothing on recrystallisation or simple distillation.
If someone can tell me briefly how they work, and how I can tell if something has any impure products that would be great.