Same!(Original post by nimesh007)
i got 1.83 n 1.98
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Edexcel IAL, Unit 5: Transition Metals and Organic Nitrogen Chemistry. 22-Jun-2016 watch
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- 22-06-2016 11:18
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- 22-06-2016 11:21
Thank God, it was easier than January 2016, I was so worried about that, however, I think it's one of those papers who has some tricky questions that you don't know you have fallen into!! The annoying part is that the grade boundaries gonna be high
And what was the answer for the diamond and graphite question, how I am going the remember that from O-level -
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- 22-06-2016 11:30
(Original post by PlayerBB)
Thank God, it was easier than January 2016, I was so worried about that, however, I think it's one of those papers who has some tricky questions that you don't know you have fallen into!! The annoying part is that the grade boundaries gonna be high
And what was the answer for the diamond and graphite question, how I am going the remember that from O-level -
Rahatara Sadique
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- 22-06-2016 11:32
Can anyone explain how the question to calculate masses of the Fe2+ and Fe3+ ions is done?
Last edited by Rahatara Sadique; 22-06-2016 at 11:33. -
skeletonboy1
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- 22-06-2016 11:50
i said graphite: one carbon bonded to three carbon atoms and it has a structure of layers stacking together by electrostatic force(not sure if it's electrostatic)
diamond: one carbon atom bonded to 4 carbon atoms and it's a giant lattice structure -
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- 22-06-2016 11:53
Both diamond and graphite have giant covalent structure ^^
I mentioned Van der Waal's forces between layers in graphiteLast edited by Quiton; 22-06-2016 at 11:55. -
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- 22-06-2016 12:16
(Original post by Blazyy)
I wrote some nonsense about covalent bonds in diamond being stronger than the elctrostatic forces of attraction in graphite. I didn't what what to write for 3 freaking marks
I just wrote Diamond has a giant molecular structure while graphite has a simly molecular structure (I know it's wrong ugh)
And that the intermolecular forces between Diamond are much stronger than in between Graphite so higher energy is needed to overcome the bonds in Diamond than in Graphite -
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- 22-06-2016 12:26
Do you think the grade boundaries would be set at 80 for A*
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- 22-06-2016 12:28
Hi guys! So what do you think about the grade boundaries of A*? 😕
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- 22-06-2016 12:35
Boundaries for A*
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- 22-06-2016 13:05
(Original post by majidabdul)
Do you think the grade boundaries would be set at 80 for A*
Posted from TSR Mobile -
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- 22-06-2016 13:18
(Original post by PlayerBB)
That's impossible! They weren't that high for unit 4 with similar difficulty
Posted from TSR Mobile
It was 80 for Unit 4 IAL January.
However, I believe it will go up no more than 75 for A*. -
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- 22-06-2016 13:22
(Original post by Rasudana)
Hi guys! So what do you think about the grade boundaries of A*? 😕
Don't worry you will get an A*.
The boundary for C34 was 115 but you managed to get A* so.... -
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- 22-06-2016 13:39
The question was about the strength of diamond and graphite, not the melting point :| so you can't really explain it using intermolecular attractions fully
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- 22-06-2016 13:56
(Original post by majidabdul)
What do u think will be threshold for A* -
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- 22-06-2016 14:10
(Original post by RizK)
The question was about the strength of diamond and graphite, not the melting point :| so you can't really explain it using intermolecular attractions fully
I wrote something like more london forces in diamond (idk why xD)
diamond- tetrahedral and graphite- trigonal planar
and 3 c-h bonds in graphite and 4 in diamond!
Is anything okay? :/ -
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- 22-06-2016 14:12
(Original post by Aimen.)
So what did you write?
I wrote something like more london forces in diamond (idk why xD)
diamond- tetrahedral and graphite- trigonal planar
and 3 c-h bonds in graphite and 4 in diamond!
Is anything okay? :/
You should have mentioned the layers in graphite vs the rigid structure of diamond i think -
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- 22-06-2016 14:50
(Original post by RizK)
The question was about the strength of diamond and graphite, not the melting point :| so you can't really explain it using intermolecular attractions fully -
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- 22-06-2016 14:50
(Original post by RizK)
yes, the tetrahedral structure and the 4 bonds is correct
You should have mentioned the layers in graphite vs the rigid structure of diamond i think -
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- 22-06-2016 14:52
(Original post by Geethan)
huthi ge putha... moko wenne lol
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