I'm quite sure the 6 marker will be either to compare power station, or the types of insulators, or the vacuum flask ( as said above). But could also ask to compare the properties of solids, liquids or gases. Make sure you revise the topics guys...
Most likely transfer energy, so like conduction, convection, radiation etc if not then maybe renewable energy - theres so much of that in unit 1. Waves - sound, light, RAY DIAGRAM, EM spectrum
Many people are thinking energy transfers with heat, as mentioned above. B1 and C1 were both on unexpected topics though, so... states of matter?
That could be true! As we have been told as it is the last year with these papers they are trying to be nicer on us so that the teachers/head of subjects stay with that exam board to maintain the money they get!