I did AQA chemistry for GCSE last year and there's a great site called 'Doc Brown's Chemistry' that explains stuff very well if you're having troubule with specific topics. I'd have a look at that if I were you!
Answered Sat 31st March, 2012 @ 11:43 by Moggerfrog
Type "Absorb Chemistry" into google, the website is really good and helped me loads with different topics. They do physics too but no bio, soz!