Month and a half! Ive just returned from some hard revision. Looking at it, there isn't really THAT MUCH to it. Its just learning the equations basically.
And as far as explaining questions go just make sure you have a good udnerstanding of newtons laws and ideal gasses.
I'm retaking this paper, I did so bad on this. This time 6 months ago, I virtually had no understanding of the paper except for the gas molecules and the heat energy equations (coincidentally chemistry equations :P ) because my teacher who is from Lebanon were frankly inunderstandable. So this module I taught myself from the last 4 months.
I just need to make sure that I'm writing it the way AQA wants me to write like to get the marks. :P