Chemistry paper1 [discussion here] after exam

[khalid hashim]

Thankk Youu =]]
so its A

 

[Zeinow]

wat about the question that is about element X wat will it gain proton or electron ??

 

[khalid hashim]

isnt the question umm " what will happen if it gains a proton?
and the answer is it will be next in the periodic table or something cant rmmber it exactly

 

[Zeinow]

r u sure?? cuz i did it ' gain electron'

 

[LoayTYS]

isnt the question umm " what will happen if it gains a proton?
and the answer is it will be next in the periodic table or something cant rmmber it exactly

I answered that it will gain a proton and will move to the right but I don't much remember how the question was

 

[exampasser]

No guys its 2124!

You have to filter first to remove the excess!

The choices that started with filter were:
2123 and 2124

And if you heat the CRYSTALS they'll turn into powder!!
If it said "Heat the solution" then that would have been correct.

Anyway, I don't want to start an argument or anything, I'm just saying what I wrote.

I wrote stainless steel for that question, and it was NH4+ and Fe2+, maybe there were 2 solutions in the test tube.
I remember my last 3 answers were all B!

 

[SoOona]

soOona where do you live (in what country )?

Kuwait! why??

 

[SoOona]

for the crystals questions the order was 2 1 2 4 ... cuz the heating part said heat the crystals it didnt say heat the solution or whtever and by heating crystals u damage them .. so no heating

whatever ... how do u wash the crystal and there r no crystals .......... 1234

Lol romeo maybe ur right chill

 

[XPFMember]

see i think its unnecessary to wash the crystals coz they will dissolve since they are soluble ,we only wash insoluble salts to remove any impurities!!!while we can heat them gently to dry them!

 

[Saturation]

Im sure its 2124... btw what was the 1st qs, the one with the molecules above the tea? Its move faster and further apart right?

 

[AHMED -_-]

guys its heat crystals
washing after filtratoin is only used in the case of an insoluble salt
u have to heat the crystals

and the question about protection from rusting
the answer is stainless steel
if u tried solving previous years i think 2003 or 2004 u will find the exact same question
and the answer in the markscheme was use of stainless steel

 

[.I.Am.Me.]

Guys why dont we leave that answer discussion thing to the examiners im sure they know the answers more than all of us.
We can know the correct answers later when the mark scheme becomes available.

 

[iluvchem]

u cannot say galvonising becuase zinc is poisnos

 

[ayhammad]

yes i agree u should leave the answers to the examiners

 

[kazamodia]

any one knows whats the correct answer about methane which doesn't produce methane????

 

[iluvchem]

wat were the choices?

 

[kazamodia]

A-Liquid methane from distillation of petroleum
B-From decaying of vegetation
C-Animals like cows
D-Dun remember

 

[exampasser]

That question above ^^ was definitely A!

 

[iluvchem]

yes A,

 

[Zeinow]

The question about which thing is NOT exothermic??
B. lime from limestone
C. decaying of uranium