[Cath-ay]

(Original post by clownfish)
This is correct

Lol thanks just checking

[lukas1051]

What are grade boundaries like for this paper? Can't find them anywhere. What % raw marks is usually required for an A? I need 78% UMS on this exam for an A overall and I'm starting to panic because compared to the content in the textbooks the exams are bloody difficult!

[clownfish]

(Original post by lukas1051)
What are grade boundaries like for this paper? Can't find them anywhere. What % raw marks is usually required for an A? I need 78% UMS on this exam for an A overall and I'm starting to panic because compared to the content in the textbooks the exams are bloody difficult!

Jun 11
Raw 100 A72 B64 C56 D48 E40
UMS 150 A120 B105 C90 D75 E60

Jan 12
Raw 100 A77 B70 C63 D57 E51
UMS 150 A120 B105 C90 D75 E60

I don't have the A* ones saved on my computer, so I'm not sure exactly where they fell.

[lukas1051]

(Original post by clownfish)
Jun 11
Raw 100 A72 B64 C56 D48 E40
UMS 150 A120 B105 C90 D75 E60

Jan 12
Raw 100 A77 B70 C63 D57 E51
UMS 150 A120 B105 C90 D75 E60

I don't have the A* ones saved on my computer, so I'm not sure exactly where they fell.

Thanks . Those are better than expected, I know for done modules they can be ridiculously high.

[pcorbett94]

(Original post by Cath-ay)
Correct me if I'm wrong but for [Cu(H 2 O) 6] 2+ ---> [CuCl 4]
2-
Isn't the colour change Blue ---> (Green--->) Yellow when you add Cl- ions to excess? :/

Yes, this is right. Sorry, I found out my notes were wrong a few weeks back when my textbook said different to my notes. My teacher remains adamant that the exam board will accept both green and yellow.

[pcorbett94]

(Original post by clownfish)
Jun 11
Raw 100 A72 B64 C56 D48 E40
UMS 150 A120 B105 C90 D75 E60

Jan 12
Raw 100 A77 B70 C63 D57 E51
UMS 150 A120 B105 C90 D75 E60

I don't have the A* ones saved on my computer, so I'm not sure exactly where they fell.

I did the Jan 12 as my mock and got 86 raw. My teacher put A* on my paper, but she wasn't 100% sure. So I'd say the A* boundary was around that.

[PrettyLittleLiars]

(Original post by lukas1051)
What are grade boundaries like for this paper? Can't find them anywhere. What % raw marks is usually required for an A? I need 78% UMS on this exam for an A overall and I'm starting to panic because compared to the content in the textbooks the exams are bloody difficult!

for the jan paper it was 120/150 for an A. That was a pretty high mark seeing that in jun last year it was way less than that.

[Oromis263]

(Original post by PrettyLittleLiars)
for the jan paper it was 120/150 for an A. That was a pretty high mark seeing that in jun last year it was way less than that.

It's 120/150 for an A every year, it's the raw mark value that changes year on year.

[Oromis263]

(Original post by pcorbett94)
I did the Jan 12 as my mock and got 86 raw. My teacher put A* on my paper, but she wasn't 100% sure. So I'd say the A* boundary was around that.

Jan 12, using OCR's typical method, the A* boundary is at A + (A-B) raw marks. A = 77 B = 70, therefore A* would be 84.

[PrettyLittleLiars]

(Original post by Oromis263)
Jan 12, using OCR's typical method, the A* boundary is at A + (A-B) raw marks. A = 77 B = 70, therefore A* would be 84.

I was just talking about the F325 paper that was taken in January 2012 and for that paper you had to get 120/150 UMS to score an A.

Oopsss read what you wrote again, never mind.

[lukas1051]

(Original post by pcorbett94)
Yes, this is right. Sorry, I found out my notes were wrong a few weeks back when my textbook said different to my notes. My teacher remains adamant that the exam board will accept both green and yellow.

The green comes about due to the mixture of both the blue and the yellow compound, both are present when ammonia is added dropwise. If you look at purely the products and reactants, the reactants are just blue and the product is just yellow. I think if you put only green in the exam you'd be wrong.

[clownfish]

(Original post by lukas1051)
The green comes about due to the mixture of both the blue and the yellow compound, both are present when ammonia is added dropwise. If you look at purely the products and reactants, the reactants are just blue and the product is just yellow. I think if you put only green in the exam you'd be wrong.

I think you mean chloride not ammonia. But otherwise I totally agree with you

[pcorbett94]

(Original post by lukas1051)
The green comes about due to the mixture of both the blue and the yellow compound, both are present when ammonia is added dropwise. If you look at purely the products and reactants, the reactants are just blue and the product is just yellow. I think if you put only green in the exam you'd be wrong.

I would be technically wrong, yes. But I don't know, surely the exam board should cut some slack to those students who did the experiment in their lab and got a green solution?

But thanks for the explanation, I will make sure I put yellow from now on, just in case. Hopefully it will come up and you will have saved me an extra mark

[pcorbett94]

I was gonna check support materials and specifications to see what OCR want, as everywhere I look says both should be fine but to check with the exam board. But the OCR site is inconveniently down. Useful.

[arvin_infinity]

(Original post by pcorbett94)
I was gonna check support materials and specifications to see what OCR want, as everywhere I look says both should be fine but to check with the exam board. But the OCR site is inconveniently down. Useful.

I think(might be wrong) green/yellow both are fine! that would be one of those that are allowed in the MS
Better off saying yellow tho

pls quote me if checked that!

[LifeIsGood]

(Original post by lukas1051)
What are grade boundaries like for this paper? Can't find them anywhere. What % raw marks is usually required for an A? I need 78% UMS on this exam for an A overall and I'm starting to panic because compared to the content in the textbooks the exams are bloody difficult!

It's on the website but under maintenance, it might help as a prediction from June 2011, sorry I couldn't be more help

http://www.sendspace.com/file/be3gvx

[lukas1051]

(Original post by clownfish)
I think you mean chloride not ammonia. But otherwise I totally agree with you

Yes I did, my bad. I still need to learn these :P

[Tyles]

lack of material of the new paper specimen is slightly annoying, especially with the OCR website being down.. anybody got any other papers apart from like the 2 jan/june 2011 papers i can do?!

[clownfish]

(Original post by Tyles)
lack of material of the new paper specimen is slightly annoying, especially with the OCR website being down.. anybody got any other papers apart from like the 2 jan/june 2011 papers i can do?!

It's back up now.

If you want more papers to work through go on here: http://www.thepaperbank.co.uk/ and try "Trends & Patterns", "Transition Elements" and "Unifying Concepts" - there will be some questions that you can't answer (eg all the ones about Vanadium on Transition Elements) but there's a lot that you can do.

[Tyles]

(Original post by clownfish)
It's back up now.

If you want more papers to work through go on here: http://www.thepaperbank.co.uk/ and try "Trends & Patterns", "Transition Elements" and "Unifying Concepts" - there will be some questions that you can't answer (eg all the ones about Vanadium on Transition Elements) but there's a lot that you can do.

upboats for you sir