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Author Topic: Help for chemistry A2 core  (Read 3096 times)

Offline Reechna

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Help for chemistry A2 core
« on: November 06, 2009, 08:20:49 am »
Can some1 plz help??? How do you predict the order for a slow step mechanism in reaction kinetics? lik in nov08 p4 qus 2?? :-[
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Offline Lana Wolf

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Re: Help for chemistry A2 core
« Reply #1 on: November 06, 2009, 12:55:08 pm »
theres no quest like tht...cie or edexel????
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Offline 123

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Re: Help for chemistry A2 core
« Reply #2 on: November 06, 2009, 03:26:50 pm »
go through this: http://www.knockhardy.org.uk/assets/08KIN.PDF
it helped me....thought not to sure with the ques.
Questions like that do come....this is CIE!

Lets do some predictions : wat mite come in Paper 42 this time!! which paper 4 u guys doin?? (all this is about CIE only)
I think Chem energetics; lattice enthalpy will def. come, could b in paper 41 /42 or both!!
Somethings quantitative in electrochem..(E values, faraday) / rate of reactions(orders) mite come... =|
Mayb less calculations with pH, Ka, etc...in acid-base equilibria
just guesses from other papers....any1 know for organic A2 sections??


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Offline Reechna

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Re: Help for chemistry A2 core
« Reply #3 on: November 07, 2009, 05:40:38 am »
Thanks... i finally figured it out. it was cie.
i believ there will be ionic equilibria, reaction kinetics, inorganic n tough questions of organics. the rest i do not know. i hope the application questions r not difficult. i really need to work well. i didn't do my best for p2 and p5  :'(
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Offline 123

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Re: Help for chemistry A2 core
« Reply #4 on: November 07, 2009, 06:54:25 pm »
Quote from: Reechna on November 07, 2009, 05:40:38 am
Thanks... i finally figured it out. it was cie.
i believ there will be ionic equilibria, reaction kinetics, inorganic n tough questions of organics. the rest i do not know. i hope the application questions r not difficult. i really need to work well. i didn't do my best for p2 and p5  :'(
yeah same! My chem p5 went a lil bad :(  But thats just 12% weightage....hopefully p33 practical chem(12% aswel) will balance it out; p2 went good...but not best
what do u think mite come in application ques.??
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Offline Reechna

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Re: Help for chemistry A2 core
« Reply #5 on: November 08, 2009, 06:24:04 am »
whatever comes out...im failing that section.never got the hang of it.
think will get NMR.. im not sure about DNA but maybe nanotechnology... partition coefficient. i dont think we'll get spider n silkworm silk (kevlar) got it on nov 08 n j09... unless cambridge likes that section  ??? wat do u think?
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Offline Lana Wolf

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Re: Help for chemistry A2 core
« Reply #6 on: November 08, 2009, 02:28:12 pm »
i think we might DNA...partition coefficient i dnt think so...if they repeat..thn mayb yeah...

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Offline kavish

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Re: Help for chemistry A2 core
« Reply #7 on: November 10, 2009, 05:03:41 am »
well chem ain't difficult just a bit bulky...it's the only paper i got 13 snif but this time its gonna change XD XD XD
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Offline metalpredictedapocalypse

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Re: Help for chemistry A2 core
« Reply #8 on: November 10, 2009, 07:30:27 am »
Well there was partition coefficient in june 09 and also  rate..Core part am thinkin group 4, polymers, electrode potential... anyone has a good guessing power for application part???

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Offline kavish

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Re: Help for chemistry A2 core
« Reply #9 on: November 10, 2009, 01:14:30 pm »
hey guys try this site it helps
http://www.gcsescience.com/science-chemistry-enter.htm
or
u can try
www.s-cool.co.uk
and as well there's

alevelchemistry.org
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Offline kavish

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Re: Help for chemistry A2 core
« Reply #10 on: November 10, 2009, 01:17:19 pm »
i mistype the link  :P
its this one
http://www.alevelchemistry.co.uk/  :D
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Offline heemvi

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Re: Help for chemistry A2 core
« Reply #11 on: November 10, 2009, 04:24:27 pm »
mayb 4 electrochemistry we cn get on avogadro's constant...
n 4 rate of reaction am fnkin we cn get graphs n 2 show tht the reaction ws 1st order(we hv 2 show constnt half lives n all)
equations n obsrvations 4 transition metals
organic 4 sure we wil b hvng on aromatic cmpnds...n nitrogen cmpounds(its in the A2 syllabus)so knw all ur reactions vry well
n also iodo form test
n 4 application part...knw all ur notes well...esp on electrophoresis.

NOTE: its only sm guesses...
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Offline Reechna

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Re: Help for chemistry A2 core
« Reply #12 on: November 11, 2009, 02:38:01 am »
protein wil come out for sure... i dnt know why im having this feeling... gud luck everyone
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Offline blackline3020

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Re: Help for chemistry A2 core
« Reply #13 on: November 11, 2009, 02:55:54 am »
hey..
Best of Luckk..
hope the ppr is easy!! :)
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Offline Reechna

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Re: Help for chemistry A2 core
« Reply #14 on: November 11, 2009, 03:00:34 am »
hope so 2. i got the paper in exactly an hour
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