The Student Room Group
Reply 1
Do you mean CHEM5? New spec?

If so, definitely nothing synoptic from Unit 4 can be in Unit 5 (since schools can do those two papers in either order), and I suggest you look at the only REAL paper for that unit, the January 2010 one. The synoptic content on that was small and was mostly basic Unit 1 and 2 knowledge you should know anyway (shapes of molecules, oxidation states, periodicity of Na to S).
It can be based on Unit 1 and 2, I don't think Unit 4. And unlike Bio you won't get some huge essay at the end - though you'll probably still get the usual big ones (6-10 markers) in section B.

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