I heard that nuclear fission was on of the six mark question. what i also heard about momentum was the 2nd 6mark questions.... I'm not quite sure as I didn't take that test at that time. I will be taking now and any information about that paper is welcome. My teacher told me , I might have that paper , as she told me there will something about nuclear fission/fusion and momentum ,so if you could remember surely about other topics, I will be very pleased for your help given. I've got like 2-3 days to get prepared ,and as I mentioned above , I didn't like that much unit 2 but now it's necessary for me to know everything from that unit.