AS Chemistry- helping each other out!

University of London Taster Courses
http://www.london.ac.uk/TASTERS

Lol please. I haven't even begun revising yet. I hope to start tomorrow I've been putting it off.

I'm excited for year 13, I can finally drop Economics which I detest but I don't want to find next year really difficult, its reassuring its not too bad though

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I hope to apply for Chemistry, although I wouldn't mind biology either so I'll try and accomadate both in my PS

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haha, I have done a good few hours, these days averaging 4-5 hours, hopefully keeping the flow going throughout the year and upping the wattage when it gets close to the exam.

It won't be hard if you put the effort it, that's pretty much it.
Also make sure you use the right books, for the courses. I used, for psychology, the CGP which really wasn't all that good and managed to get a B, but maybe if I used the official one with a lot more info, It would have gotten me a better grade( and the fact that I should have revised more!).

Just keep that in mind, cause you don't want to end up skipping important stuff!

Man I forgot I have to gear it towards several subjects -_- mty back ups are biology and physics and maths so I'm not sure how this will work out I just equally enjoy each
If we're both doing one with chemistry in mind we could probably help each other out
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Thanks! It looks really good but I can't find any info on stem ones?

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Sorry if this question's already been asked. Does anyone know the dates of the Chemistry exam, OCR A?

Hello AS Chemistry TSRians!

I thought it would be a good idea to make a thread, where students doing AS Chemistry, post/ask questions, and we could all help each other out?

Teaching another person, also helps you become more confident and you both develop a better understanding. I know there is an A-level chat thread already, but this should be for learning!

There is no such thing as a silly question, so ask away and hopefully, you'll find someone who can help you

I shall also make a list of the Chemistry students, and what exam board they're all on! So please post what exam board you are on, if you are in!

List of the students doing Chemistry!


Lovely helpers!



I apologize if I've missed anyone out, got the list from Current year 12 list! (Lazy i know)

P.S- If you don't want to, okay, you are not obliged to do so! But please, no rude/offensive comments

Sorry if this has been asked but it's a question I have been struggling on for a while. I think I know how to do it as I have tried to self teach but I'm wondering what methods other people use to see if they make more sense.

How do you work out % yield?

First one's on Atoms Bonds and Groups on the 22nd May, Second- Chains, Energy and Resources on the 2nd June

What's the difference between Cis, trans and E/Z isomerism? I don't understand the explanation in the textbook.

Im OCR A if that helps! :-)

Im doing AQA, so this may explain too much/not enough but here goes.

Firstly, I remember it as E/Z, not Cis/Trans as E/Z tells me what the isomers look like.

I'm assuming that you know that each of the Carbon atoms must have two different groups attached to them and that the stereoisomers "have the same structural formula, just a different arrangement in space" (the "...." is a 1-2 mark answer which I know off by heart, as it is often asked).

Here are two stereoisomers:

I remember the E/Z from what they look like; the one that looks like an 'E', is the Z (Draw a Z in midair across the stereoisomer: For the first it would go from H-Cl-Cl-H and the 2nd does not look like a Z.)
Edit: The trans is the one that has same groups diagonally across from each other.
This shows a way to explain which is E and Z and which is Cis and Trans, but I believe that you only need to know one of them.

If you need to know anything else, just say.
The drawing E/Z in midair may be confusing from my writing as it is hard to explain without doing it in front of you.

Another easy way to learn E/Z rules is that E = epposite side (I know its cheesy) and Z = zame zide

Hmm, I like the zame zide.
I wonder how many other ways there are of remembering this.

What's the difference between Cis, trans and E/Z isomerism? I don't understand the explanation in the textbook.

Im OCR A if that helps! :-)