So basically, for chemistry I feel as though I know all the content thoroughly. For my exams I revised so much! I had already done my notes, done Q cards on mechanisms and reactions, memorised all the trends,reacions and content and thought I understood it well. Then I got my result back and received a D. I just don't understand where I went wrong!!! On top of this I also did loads of questions for each topic of the book.... Also, I can't imagine how this can be a question of not revising enough because I revised for weeks!
My question is what am I doing so wrong and how can I improve?