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Author Topic: CHEMISTRY PAPER 1 HERE  (Read 37975 times)

Offline shaxter8

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Re: CHEMISTRY PAPER 1 HERE
« Reply #45 on: June 11, 2009, 05:46:25 am »
GUYS, COULD YOU PLEASE ATTACH CHEM P1 1993 UP TO 2002 or tell me how to get them?

THANX A TONNE!

« Last Edit: June 11, 2009, 05:54:06 am by shaxter8 »
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Offline Christy

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Re: CHEMISTRY PAPER 1 HERE
« Reply #46 on: June 11, 2009, 06:03:01 am »
question paper or ms ??
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Offline persian17

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Re: CHEMISTRY PAPER 1 HERE
« Reply #47 on: June 11, 2009, 06:23:21 am »
Both would be great^
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Offline Christy

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Re: CHEMISTRY PAPER 1 HERE
« Reply #48 on: June 11, 2009, 06:45:24 am »
i have ms only ...  ???

dont think tht will be off any help tho ....
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nid404

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Re: CHEMISTRY PAPER 1 HERE
« Reply #49 on: June 11, 2009, 06:56:40 am »
@john: Please check the question again cuz I feel it's incomplete.

Thanks
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Offline shaxter8

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Re: CHEMISTRY PAPER 1 HERE
« Reply #50 on: June 11, 2009, 07:49:33 am »
HOW DO YOU GET 1993 TO 2002 PAPERS? CHEM P1 + MS?
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Offline girl_92

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Re: CHEMISTRY PAPER 1 HERE
« Reply #51 on: June 11, 2009, 07:58:27 am »
Quote from: cherrip on June 10, 2009, 02:24:12 pm
hey can anyne help me with this question please..
Its nov 07 ques 31... mark scheme says it should be B, i say its C..
can anyone tell me how?shouldnt it b C as oxygen is whats added to iron?
Thanks in advance ;D
dude it cannot be C bcoz carbon is only used to make only industrial steel n they r asking abt different types of steel which means more than one type so the answer is chromium n nickel because they r transition elements the answer is B
ppl plz correct me if im wrong
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Offline Triple_A

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Re: CHEMISTRY PAPER 1 HERE
« Reply #52 on: June 11, 2009, 08:30:24 am »
maaaaan...check the periodic table! Carbon isnt in C (group 6)
beside in B(transition metals)...u have nickel and chromium..used to make stainless steel!
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Offline Priceless

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Re: CHEMISTRY PAPER 1 HERE
« Reply #53 on: June 11, 2009, 08:53:17 am »
Quote from: shaxter8 on June 11, 2009, 07:49:33 am
HOW DO YOU GET 1993 TO 2002 PAPERS? CHEM P1 + MS?


give me ur email.....i ll send it across......Q80BOY had given dem in nother topic ;)...thnkz Q80
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Offline john12345

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Re: CHEMISTRY PAPER 1 HERE
« Reply #54 on: June 11, 2009, 09:27:09 am »
Quote from: nid404 on June 11, 2009, 06:56:40 am
@john: Please check the question again cuz I feel it's incomplete.

Thanks

hey no nid the question is complete

even i though its weird but dats all de question says
de markscheme says its oxidation

i guesss it cant be neutralisation cause in dat hydrogen ions are involved not atoms nd hence it must be oxidation as atoms are involved in oxidation

also ions take part in displacement so it cant be dat

i guess??
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Offline girl_92

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Re: CHEMISTRY PAPER 1 HERE
« Reply #55 on: June 11, 2009, 10:03:50 am »
Quote from: john12345 on June 10, 2009, 04:46:40 pm
nd one more question

which process can convert molecules to a new substance by removing hydrogen atoms
A displacement
B fermentation
C neutralisation
D oxidation

how do you solve this question
john it is oxidation By the way it is not der 4r us it cums in O-levels loss of hydrogen is oxidation
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Offline cockyxrocker

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Re: CHEMISTRY PAPER 1 HERE
« Reply #56 on: June 11, 2009, 10:16:23 am »
OK so I have a few questions

1)hydrogen can form both ionic and covalent compounds
with which element will hydorgen form an ionic compound?
a-carbon
b-chlorine
c-nitrogen
d-sodium

2)CuSO4 (aq) is electrolysed using Cu electrodes
what observations will be made?

           at anode               at cathode               electrolyte
a-        anode dissolves      pink solid forms        blue color fades
b-        anode dissolves      pink solid forms        no change
c-      colourless gas forms  colourless gas forms  no change
d-     colourless gas forms  pink solid forms         blue color fades

3)  The carbonate of metal x is a white solid
it decomposes  when heated to form co2 gas and a yellow solid oxide
what is metal x

a-copper
b-iron
c-lead
d-sodium

Can somebody please answer them with explaination
Thanks
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Offline sweetest angel

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Re: CHEMISTRY PAPER 1 HERE
« Reply #57 on: June 11, 2009, 10:25:35 am »
1) SODIUM SINCE ITS DA ONLY METAL
2) "D" SINCE hydroxide is colourless gas...copper pink solid!!
3)can u post the paper...i remeba doin' it buh cnt give xact explanation unless sure of answer!
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Offline girl_92

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Re: CHEMISTRY PAPER 1 HERE
« Reply #58 on: June 11, 2009, 10:27:09 am »
Quote from: cockyxrocker on June 11, 2009, 10:16:23 am
OK so I have a few questions

1)hydrogen can form both ionic and covalent compounds
with which element will hydorgen form an ionic compound?
a-carbon
b-chlorine
c-nitrogen
d-sodium

2)CuSO4 (aq) is electrolysed using Cu electrodes
what observations will be made?

           at anode               at cathode               electrolyte
a-        anode dissolves      pink solid forms        blue color fades
b-        anode dissolves      pink solid forms        no change
c-      colourless gas forms  colourless gas forms  no change
d-     colourless gas forms  pink solid forms         blue color fades

3)  The carbonate of metal x is a white solid
it decomposes  when heated to form co2 gas and a yellow solid oxide
what is metal x

a-copper
b-iron
c-lead
d-sodium

Can somebody please answer them with explaination
Thanks
its 1 d, 2B n 3a
« Last Edit: June 11, 2009, 10:32:49 am by madee »
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Offline MR.BooMBastiC

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Re: CHEMISTRY PAPER 1 HERE
« Reply #59 on: June 11, 2009, 10:31:36 am »
1=d
2=b
3=i doubt da q
yellow oxide???

r u sure that its in question
yellow!!!
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