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Author Topic: CHEM AND BIO HELP AND TIPS HERE  (Read 357071 times)

Offline Ghost Of Highbury

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2250 on: May 25, 2010, 08:38:54 am »
Quote from: Lariemeeva on May 25, 2010, 08:32:57 am
A@di, sorry, I still don't understand Oct/Nov 2008 Q15 but thanks for the other explanations.
By the way, can list down all the important metals/transition metals/non-metals with their colours and their salts' colours?
And if Barium nitrate (or any other soluble substance) is soluble, it means we can  break it down into it's ions? Therefore, we can say that Barium is formed?

It dissociates in water, Barium is not formed, BARIUM IONS are formed. Yes insoluble salts are precipitates ..

about Q15) Same mass dissolving in less volume, more heat will be taken in. Inversely proportional, (10*1000)/500 = 20'C

Nickel salts - Green
Iron(II) salts - Green
Copper salts - Blue
Calcium salts - red

« Last Edit: May 25, 2010, 08:44:01 am by A@di »
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Offline Lariemeeva

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2251 on: May 25, 2010, 08:49:59 am »
Right, Thanks so much, I understand it all now!!
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Offline Ghost Of Highbury

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2252 on: May 25, 2010, 08:50:53 am »
Quote from: Lariemeeva on May 25, 2010, 08:49:59 am
Right, Thanks so much, I understand it all now!!

Ur welcome. good luck for the paper.
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Offline The Golden Girl =D

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2253 on: May 25, 2010, 08:52:07 am »
Quote from: Lariemeeva on May 25, 2010, 08:49:59 am
Right, Thanks so much, I understand it all now!!

go kill the paper my friend  :D :D ;)
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Offline WARRIOR

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2254 on: May 25, 2010, 09:07:09 am »
can some1 give me the mark scheme

of m/j and oct/ nov 2001
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Offline luv3life

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2255 on: May 25, 2010, 09:18:27 am »
Chem Paper 1 - awesome! Piece of cake. :P I love. lol
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Offline Xainalley

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2256 on: May 25, 2010, 09:20:06 am »
Quote from: luv3life on May 25, 2010, 09:18:27 am
Chem Paper 1 - awesome! Piece of cake. :P I love. lol
variant 1 or 2??
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Offline luv3life

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2257 on: May 25, 2010, 09:22:30 am »
Xainalley : Variant 2 :D
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Offline Lariemeeva

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2258 on: May 25, 2010, 09:27:38 am »
^^OMG I want that!!

My exams is 3 hours away, I'm using every second of it to study.

Anyways, I know I've been a heavy load but another question,

Oct/Nov 2008 Q20.

Thanks again, and sorry for the constant trouble...
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Offline princess12

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2259 on: May 25, 2010, 09:31:58 am »
hi guys
anybody finish chemistry paper 1    ??? ??? ??? ??? ??? ???
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Offline takamorinki

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2260 on: May 25, 2010, 09:33:19 am »
paper was easy :DD
P.L.S DO NOT ASK ME WHAT IS IN IT
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Offline princess12

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2261 on: May 25, 2010, 09:36:41 am »
ok
where do u live?
takamorinki
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Offline PeaceMaker

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2262 on: May 25, 2010, 09:37:27 am »
Anybody has the reactivity series list? If so, post them and thanks.
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Offline Lariemeeva

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2263 on: May 25, 2010, 09:40:10 am »
Anyways, I know I've been a heavy load but another question,

Oct/Nov 2008 Q20 and Q21 (why is it Sulfuric acid and not HCL?)

Thanks again, and sorry for the constant trouble...
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Offline Ghost Of Highbury

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #2264 on: May 25, 2010, 09:44:16 am »
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