That paper was filth. bloody awful. Astrophysics was the only thing I could do. CCD 6 MARKER. I could just think of 2-3 points. Horrendous heat capacity question. Awful volume questions. Tonnes of wordy question. Thank you aqa for changing the paper compared to previous years. Lets just hope the grade boundaries are low
We weren't taught it either. Sorry to tell you though, but the Atomic Mass Unit is u (the thing you multiply by for mass defects), which is 1.661*10^something, not the mass of a proton. I had no idea how to define it; if I'm extremely my poorly explained mathematical definition will get the marks, but I highly doubt it.
We also weren't taught what happens to the neutrons in a moderator when they are colliding elastically. Can't even remember reading about that in the book. Oh well.
It's 1/12 of a Carbon Nucleus :P I managed to pull it out of my head somehow in the exam, no idea how!