(Original post by Tullia)
No, AS Chemistry isn't difficult at all. The only difficulty with it is that there is a of of content compared to what you've probably come across at GCSE, but as long as you approach your learning in the right way then you'll be fine.
For some people it can be a case of relearning everything, due to the oversimplification at GCSE of much of chemistry. But that depends on whether you've done Double Award or Triple Award Science.
I would recommend that the Summer before you commence AS that you study some of the content so you've at least introduced yourself to it, and definitely revise independently as well, as your teacher will likely be rushed to complete the syllabus because there is so much content alongside practicals that you're expected to do.
I think you're referring to the ISA, and if so then that really is the area where overall grades can be lost. My College isn't really representative, but there were only 3 people (myself included) that got an A on the ISA. The grade boundary last year for an A in the ISA was 46/50.
As far as the ISA goes, then preparation really is just looking over all the past papers and being proactive in discussing whatever topic it ends up being on (usually one of the two set each year is based on a titration) with your teacher. You'll be told the topic for the ISA about a week before you actually do it, and so that's really the window of opportunity.
No, it's normal to do PHYA1 and then PHYA2. I do think my teacher has it the correct way around though, as PHYA1 is ridiculously easy. By doing PHYA2 in January, you effectively get two attempts at the exam if you don't do well in it the first time around. Whereas, if you only do it in June then you can't afford to even have a bad day on the day of the exam.
No, all of the Maths that you'll do in AS Physics will be straight forward. You do things like SUVAT equations and conservation of energy and work, and pretty much everything you'll have covered in M1.
Sure. If you don't mind sending me your e-mail address via a PM, then I'll send them to you. I can't attach it in this thread because the files are too large.