Change of State, Physical Change vs Chemical Change, Composition of Matter, Characteristic Physical Properties, Periodic table elements, Electricity...
4.1.1 Atomic structure (might need to know) PAPER 1, 4.1.2 Atomic structure and the Periodic Table (must know) PAPER 1, 4.2.1/2/3 Bonding, structure properties of matter (must know) PAPER 1 part 1...