Basically from what I have learnt, the key for success at Chemistry Alevel is to be consistent with practice and do a lot of past paper questions. I have been doing so and I have been using physics and maths tutor. I do OCR Alevel Chemistry and the questions I do are very repetitive to the point where I just seem to be doing the same paper again and again. I'm getting a bit conscious with this and I was wondering if anyone had any recommendations for past paper websites for OCR Chem. I would prefer it if these websites were free as well