OCR Chemistry A Exam Thread (Breadth - May 27 2016 and Depth - June 10 2016)

Original post by 11...

for the enthalpy profile diagram. did u put N2 (g) and O2(g) as the reactants and N2O2 (g) as product.
and +82kjmol-1 was the enthalpy change right

I'm sure it was N2(g) + 1/2O2(g) and on products N2O(g)

Reply 1142

Original post by Jaysal63

Does anyone know what the grade boundaies would be for an A? Our teacher said its unlikely to be 80% as it usually is because its a new spec but im not too convinced? Im worried I might just slip below the grade boundary if its truly 80%

I think 80% is a fair bet because both papers weren't that hard. It might be 77% but don't think it's going to be much lower than that

Reply 1143

Jaysal63

Original post by asinghj

I think 80% is a fair bet because both papers weren't that hard. It might be 77% but don't think it's going to be much lower than that

Urgh thats a shame ill be either relieved or suicidal on results day then

Reply 1144

S.G.

22

Original post by Jaysal63

Urgh thats a shame ill be either relieved or suicidal on results day then

I think I've got around 113/140. It is tight. Hopefully grade boundaries will be low enough

Reply 1145

Jaysal63

Original post by SGHD26716

I think I've got around 113/140. It is tight. Hopefully grade boundaries will be low enough

on the depth im floating around 55 ish hopefully i did better in the breadth

Reply 1146

well scared for results day. I need AAAA in order to get into medicine really. hope the grade boundaries are low as well, cos these unis like UCL look at the ums as well. that is how deep medicine is. omg

(edited 7 years ago)

Reply 1147

Original post by Jaysal63

Urgh thats a shame ill be either relieved or suicidal on results day then

You'll be fine don't worry

Reply 1148

S1 next week. how r u guys feeling about that if you do maths??? Maths is the easiest subject I take I reckon. C1 and C2 banged, although there are comments about the C1 being nasty, and I checked the unofficial mark scheme and it was great. hope the same for S1 .
to get an A* at A level, you need to get 80% average across all 6 modules c1, c2, s1, c3, c4, m1. and 90% average between c3 and c4. so c3 and c4 are the most important.

Reply 1149

alfmeister

2

Original post by 11...

S1 next week. how r u guys feeling about that if you do maths??? Maths is the easiest subject I take I reckon. C1 and C2 banged, although there are comments about the C1 being nasty, and I checked the unofficial mark scheme and it was great. hope the same for S1 .
to get an A* at A level, you need to get 80% average across all 6 modules c1, c2, s1, c3, c4, m1. and 90% average between c3 and c4. so c3 and c4 is the most important.

Yeah I agree, c1 and c2 were good. M1 was also good so hopefully s1 will be the same next week. And then d1 will hopefully be good but never know with that one. Good luck. Do you think you did well today?

Reply 1150

Original post by alfmeister

Yeah I agree, c1 and c2 were good. M1 was also good so hopefully s1 will be the same next week. And then d1 will hopefully be good but never know with that one. Good luck. Do you think you did well today?

yeah it went really well. in fact better than the breadth. what about u?

Reply 1151

ChiefNik

4

Does anyone know when we get the results ??

Reply 1152

alfmeister

2

Original post by 11...

yeah it went really well. in fact better than the breadth. what about u?

Good to hear, yeah it went well today. I think I I lost 5-7 marks on silly things. Also depends how strict they are

Reply 1153

august 18th results day :smile:

at the same time :frown:

Reply 1154

less hydrogen is produced because there are fewer moles of the metal used.
do u think I got the mark or do I have to say cos the atom has a larger relative atomic mass as well for only a mark, cos u know ocr can be soooooooooooooooooooo specific in the newwwww spec

Reply 1155

Jitesh

14

Original post by 11...

less hydrogen is produced because there are fewer moles of the metal used.
do u think I got the mark or do I have to say cos the atom has a larger relative atomic mass as well for only a mark, cos u know ocr can be soooooooooooooooooooo specific in the newwwww spec

we don't know as the mocks weren't properly standardised etc

I just road loads extra to ensure I get a mark (without wrong info ofc!)

Reply 1156

harryleavey

Original post by 11...

for the difference between sigma and pi bond. I put sigma bond has a higher electron density than the pi bond. do u guys think i got a mark here

No, a pi bond does not have a higher electron density.

A double bond (i.e a sigma + pi) has a higher electron density than a single bond.

I spoke about the distribution of the electron density.

Reply 1157