U PUë - Exam QA
(e)€€€€ Explain why graphite can conduct electricity. You should include a reference to electrons in your answer. _____ _____ _____ _____ (2) (Total 9 marks) This question is about fluorine. (a)€€€€ Calcium reacts with fluorine to produce calcium fluoride (CaF2). Explain how oxidation and reduction have taken place in this reaction.