Personally I found 1C pretty easy.
ALL Electrolysis topics including
Definition
What is an electric current?
Electrolyte and non-electrolyte experiments.
Molten (probably only if involving moles, coulombs and Faradays)
Aluminium (cryolite, electrode replacement)
Aqueous (concentrating on NaCl - diaphragm cell), CuSO4 and H2SO4.
Tests for all products and observations in all cells
Ionic half equations
Blast furnace
Raw materials (not carbon)
Know all 5 reactions in detail
Obviously uses of aluminium and iron, and why different methods used for theirextraction.
Crude Oil
Process of Separation in detail
Fraction order, names, uses, properties
Cracking
Polymers (prep, differences,
Four methods of making salts
Anything related to Environment (acid rain, biodegradability, climate change)
Giant Covalent structures - graphite/diamond
Atmosphere – qualitative analysis/solubility
Moles, percentage yield calculations
Ionic bonding
Halogens
Ethanol
Bond energy calculations
Haber/contact process
Condensation Polymerisation