Has anyone done all three Quantatative tasks for ocr?

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I have done one, on moles but did extreemly badley i got 5/15 i really want to get full marks, any hints?

Posted Sun 4th March, 2012 @ 16:12 by AJSarah

8 Answers

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I have done a water of crystallisation one where I got 14/15 and a titration one where I got 15/15 and the key is to make it clear that you are using the full accurate numbers in all of your calculations and always round to 3 significant figures at the end unless specified otherwise, go over all of the moles calculations and recheck all of your answers

Answered Sun 4th March, 2012 @ 18:17 by Sonar patel
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Is there one about enthalpy changes?

Answered Sun 4th March, 2012 @ 18:29 by AJSarah
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I haven't done a quantitative ISA on that topic

Answered Thu 8th March, 2012 @ 18:27 by Sonar patel
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What did you have to do for the ISA on moles? was it a practical and then a question sheet. what kind of questions were on it. I'm not sure what ISAs i've done but i've done quite a lot.

I also did the water of crystallisation one and I got about 12/15. I agree with Sonar Patel. Remain calm (don't spill bottles of chemicals like I did) and read the questions carefully. take your time. 

Answered Tue 13th March, 2012 @ 16:49 by RayRay
Edited by RayRay on Tue 13th March, 2012 @ 16:56
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Thanks for the advice, but i dont think that i am doing chemisty isa, i think its just normal chemisty ocr.

Answered Thu 15th March, 2012 @ 18:40 by AJSarah
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Hey can you tell me what came up please.. It's my last chance to improve my grade :)

Answered Thu 11th April, 2013 @ 20:42 by Quentin Narascoss
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Hey can you tell me what came up please.. It's my last chance to improve my grade :)

Answered Thu 11th April, 2013 @ 20:42 by Quentin Narascoss
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Hey can you tell me what came up please.. It's my last chance to improve my grade :)

Answered Thu 11th April, 2013 @ 20:42 by Quentin Narascoss