IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Reference Material => GCE AS & A2 Level => Revison Notes => Topic started by: Q80BOY on October 25, 2009, 07:22:48 pm

Title: Chemistry Analysis Tables
Post by: Q80BOY on October 25, 2009, 07:22:48 pm: Testing for Cations
Anions

see them attached .. enjoy!!
Title: Re: Chemistry Analysis Tables
Post by: Q80BOY on October 25, 2009, 07:26:02 pm: Identification of functional groups in organic componds

enjoy :)
Title: Re: Chemistry Analysis Tables
Post by: Q80BOY on October 25, 2009, 07:28:02 pm: Identification chart for gases

Tests to confirm the presence of anions

best of luck ;)
Title: Re: Chemistry Analysis Tables
Post by: MaNa on October 25, 2009, 07:31:46 pm: Q8.Do u have test for gases?
Title: Re: Chemistry Analysis Tables
Post by: MaNi_DaDuDe on October 26, 2009, 03:12:27 am: Quote from: MaNa on October 25, 2009, 07:31:46 pm
Q8.Do u have test for gases?

Identification of gases is attached in his previous post.

Thanks and good job, Q80. Needed these for the upcoming practical. :)
Title: Re: Chemistry Analysis Tables
Post by: 123 on October 26, 2009, 04:36:32 am: Quote from: MaNi_DaDuDe on October 26, 2009, 03:12:27 am

........ Needed these for the upcoming practical. :)
Why??
They already give the chart for identifying both ions at the back of exam paper.
I think all u gotta do is copy the exact wording from that chart into observation!
Which exam board u guys doin?? If its CIE then are u takin paper 33s on 29 oct?
Title: Re: Chemistry Analysis Tables
Post by: MaNi_DaDuDe on October 26, 2009, 11:43:43 am: yeah exactly. CIE
Title: Re: Chemistry Analysis Tables
Post by: 123 on October 26, 2009, 11:49:32 am: Quote from: MaNi_DaDuDe on October 26, 2009, 11:43:43 am
yeah exactly. CIE
yo mani u giving paper 33 or34??
whats ur guess on paper 33 on 29th oct??
Title: Re: Chemistry Analysis Tables
Post by: MaNi_DaDuDe on October 26, 2009, 02:26:01 pm: Quote from: 123 on October 26, 2009, 11:49:32 am
yo mani u giving paper 33 or34??
whats ur guess on paper 33 on 29th oct??

33.

I think dehydration will come up as it should have come in May June.
Title: Re: Chemistry Analysis Tables
Post by: 123 on October 26, 2009, 04:08:09 pm: 2nd question....which dehydration? u think there i'll b 3 questions? cos in m/j 09paper 31 there wer 3 questions...so mayb paper 33 will hav 2 ques. i hope these cie r not gonna give us H2O2!!
THat chemical does nuffin!
Title: Re: Chemistry Analysis Tables
Post by: MaNi_DaDuDe on October 26, 2009, 04:58:53 pm: why what's h2o2? and what good is it?
Title: Re: Chemistry Analysis Tables
Post by: 123 on October 26, 2009, 05:37:34 pm: hydrogen peroxide - gets decomposed fast. like really fast in hot climate- schools can't store it carefully
so turns to water in a jiffy...and wat good is water in practicals but for drinkin!

mayb there won't b any sodium thiosulfate this time! :P
Title: Re: Chemistry Analysis Tables
Post by: MaNi_DaDuDe on October 26, 2009, 06:33:32 pm: I feel there will be 3 questions myself.

How do you prepare for a practical anyway? The efficient way. I do it wrong, I know. Any tips brawla?
Title: Re: Chemistry Analysis Tables
Post by: 123 on October 27, 2009, 07:48:13 am: man i hope not 3 questions =(
i think there will b just 2
cos every session in a year has 3questions in either may or nov but not both. its a pattern

Since m09 had 3questions...prob. n09 will hav 2questions.

check out: http://www.knockhardy.org.uk/sci.htm (http://www.knockhardy.org.uk/sci.htm)
look for notes; error & measurement , mole calc. and some other rate rxn stuff

i don't think rate of rxn will cum this tym...mayb somethin on enthalpy
look @ the booklet in https://studentforums.biz/index.php/topic,4454.0.html (https://studentforums.biz/index.php/topic,4454.0.html)
the last pages help
Title: Re: Chemistry Analysis Tables
Post by: Sorceres on October 27, 2009, 07:57:28 am: i'm afraid the the format may somehow change..
just like for my bio practicals, every year they have the same questions like asking for the errors, micrometry and blax3 but this time its completely different!!!
and they used to have 2 questions only but then this paper have 3!! :o
so i really hope they don't change the format for chem prac :-\
Title: Re: Chemistry Analysis Tables
Post by: 123 on October 27, 2009, 08:36:07 am: Quote from: Sorceres on October 27, 2009, 07:57:28 am
i'm afraid the the format may somehow change..
just like for my bio practicals, every year they have the same questions like asking for the errors, micrometry and blax3 but this time its completely different!!!
and they used to have 2 questions only but then this paper have 3!! :o
so i really hope they don't change the format for chem prac :-\
oops! ye hope so too! but was AS bio practical always 2 questions from 2007 - m2009??
in AS chem practicals it changes 2- 3 questions every session! and theres a pattern
anywayz i think wit 3questions the parts will b shorter & easier to solve :P
Title: Re: Chemistry Analysis Tables
Post by: Sorceres on October 27, 2009, 09:19:59 am: yes it was always 2 question from 2007 til m/j 09..
so how many questions do u think there be for chem practical 29/10? ;D
Title: Re: Chemistry Analysis Tables
Post by: 123 on October 27, 2009, 09:44:49 am: hmmm
as theres a pattern of 2-3 questions with 2007-may2009 chem practicals - esp. paper 31
i think there will b 2questions this paper 33
isn't paper 31 comparable to paper33 & paper 32 to paper 34?
Title: Re: Chemistry Analysis Tables
Post by: MaNi_DaDuDe on October 27, 2009, 12:05:39 pm: I am certain there will be three questions.

They throw in a surprise question after the titration and before the cation/anion identification tests. :X
Title: Re: Chemistry Analysis Tables
Post by: Sorceres on October 27, 2009, 12:19:04 pm: when there are bubbles in a solution, is it necessarily CO2?
Title: Re: Chemistry Analysis Tables
Post by: MaNi_DaDuDe on October 27, 2009, 01:34:31 pm: Can be any gas. Look at the gas tests. Usually ammonia, CO2, NO2, SO2 or H2. I think.
Title: Re: Chemistry Analysis Tables
Post by: 123 on October 27, 2009, 01:35:46 pm: Quote from: Sorceres on October 27, 2009, 12:19:04 pm
when there are bubbles in a solution, is it necessarily CO2?
not necessarily but mostly it is...
Just see the chart on all paper 31s in page 12 -test for gases...that confirms it

they'll give the chart on paper33

I def, think they'll b 2questions with hard parts!! its a pattern they must b followin =P
Title: Re: Chemistry Analysis Tables
Post by: MaNi_DaDuDe on October 28, 2009, 11:37:30 am: What pages of the AS Practical Booklet are important?

Please let me know.

Thanks.