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Author Topic: Chemistry Paper 1 + Mark Scheme Here  (Read 7298 times)

Offline unknown

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #30 on: June 17, 2009, 06:11:01 pm »
guys i feel 25th ans is rong bcz argon is no way abundant in d air its proportion is pretty les i gues d ans is d
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zara

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #31 on: June 17, 2009, 06:13:12 pm »
Quote from: unknown on June 17, 2009, 06:11:01 pm
guys i feel 25th ans is rong bcz argon is no way abundant in d air its proportion is pretty les i gues d ans is d
its compared to helium....so its abundant..n the ans in it is correct.. ;D
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Offline unknown

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #32 on: June 17, 2009, 06:15:06 pm »
ohhh i gues i lost 3 or 4 mrks bt ok i jst hope thts an a wht abt u zara
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zara

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #33 on: June 17, 2009, 06:19:47 pm »
Quote from: unknown on June 17, 2009, 06:15:06 pm
ohhh i gues i lost 3 or 4 mrks bt ok i jst hope thts an a wht abt u zara
A still...:)
i did B for 25....n its rite... ;D
m losin 2 mrks...
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Offline Fibonacci

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #34 on: June 17, 2009, 07:14:56 pm »
Thanks guys ;) I got 38/40, t'was really awesome cause i got 26 on my mock :P

I'll be posting more 2009 papers. I already got the Portuguese and English First Language. There are no Mark Schemes for them. I'm still going to get the Economics, Physics and Biology Paper 1 and I'll try to get the mark scheme if my teachers have availability.

And By the way, it is in fact calcium (A) because it is the only metal and when it reacts with oxygen, it forms an alkali (or basic oxide) (calcium oxide). So, it was the only one which can turn litmus paper blue.

To the helium one, i don't think the question was quite relating to the filament but in fact, to your knowledge about the composition of air and the trends in the noble gases (the further down you go on the group, the more dense they are)
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Offline astarmathsandphysics

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #35 on: June 17, 2009, 07:28:37 pm »
Good stuff!
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Offline IGis2easy

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #36 on: June 17, 2009, 08:56:30 pm »
yeeessss thank u god i got 39/40 ... i only got q no.24 wrong!!!!
Thanks man for posting this +rep for u  ;D
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Offline aquarian93

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #37 on: June 18, 2009, 04:36:23 am »
i got a 37/40. hope dats an A
thanks once agn, cnt wait to c da other paper1s. good job!
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Offline girl_92

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #38 on: June 18, 2009, 10:45:46 am »
Thanks  Fibonacci  u seriously rock By the way do u have other papers as well
 
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Offline AS girl

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #39 on: June 18, 2009, 02:04:20 pm »
Quote from: madee on June 18, 2009, 10:45:46 am
Thanks  Fibonacci  u seriously rock By the way do u have other papers as well
 


yes i wonder if he has other papers!!
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Offline Fibonacci

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #40 on: June 18, 2009, 07:26:53 pm »
Hey people. I am waiting on more papers. I'll get the Physics and economics Paper 1 tomorrow. Biology paper 1, i'll only get like on Tuesday 'cause my teacher is currently out.

By the way, there is a lil' problem with the mark scheme I posted. Question 26 isn't C, but in fact, it's A. My teacher mis read the question. If it had been talking about the compound (metal E sulphate), then it would be C. We know it's a transition metal because the compound is coloured and if it is a compound, it would have a low density. But the question only asks for the element E, therefore, the transition metal. So, as said in the syllabus, it's got a high density and high melting point. Sorry about that.

That said, I got 39/40 :D

See Ya,
Peace
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Offline IGis2easy

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #41 on: June 18, 2009, 09:35:48 pm »
Quote from: Fibonacci on June 18, 2009, 07:26:53 pm
Hey people. I am waiting on more papers. I'll get the Physics and economics Paper 1 tomorrow. Biology paper 1, i'll only get like on Tuesday 'cause my teacher is currently out.

By the way, there is a lil' problem with the mark scheme I posted. Question 26 isn't C, but in fact, it's A. My teacher mis read the question. If it had been talking about the compound (metal E sulphate), then it would be C. We know it's a transition metal because the compound is coloured and if it is a compound, it would have a low density. But the question only asks for the element E, therefore, the transition metal. So, as said in the syllabus, it's got a high density and high melting point. Sorry about that.

That said, I got 39/40 :D

See Ya,
Peace
but in the marking scheme you posted the answer for question 26 is A so there is no mistake in the marking scheme bro  ;)
and ya its green and hence its iron (II)  (the percipitate of iron (II) is green) and its a transition metal so it has high melting point aswell as high density. ;D
congrats on getting the extra mark were both 39/40 now 8)
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Offline hdbkiwi

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #42 on: June 19, 2009, 05:03:56 pm »
thanks so much mate-I put aqueous cryolite instead of molten and also put petrol instead of paraffin-so 38/40 for me! :D
Great job-plus rep^^
« Last Edit: June 20, 2009, 10:13:18 am by hdbkiwi »
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Offline Fibonacci

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #43 on: June 19, 2009, 07:57:16 pm »
I can't :P. Molten cryolite is used of the electrolysis of aluminium and fuel for aircrats is parafin. Sorry :p

By the way, already got Physics and Eco p1. will be posting today
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Offline CrEaTuRe_X

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Re: Chemistry Paper 1 + Mark Scheme Here
« Reply #44 on: June 20, 2009, 08:27:53 am »
Quote from: Fibonacci on June 19, 2009, 07:57:16 pm
I can't :P. Molten cryolite is used of the electrolysis of aluminium and fuel for aircrats is parafin. Sorry :p

By the way, already got Physics and Eco p1. will be posting today

I am on pins and needles, and today is 20th, dont mean to sound like a pig, but where are the papers?
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