OCR AS Salters Chemistry F332 - Wednesday 23rd May 2012 1:30pm

I made some changes because they were wrong, and added a few questions =D

for one of the answers, on what type of bond breaking is this :-
i put HOMOLYTIC rather than HOMOLYTIC FISSION...would i loose that mark ?

so for that question :- whether it had an overall dipole, is the molecule non-polar or polar?
thank you

From what I've seen in past papers, it's usually either homolysis or homolytic fission that's accepted. I suppose there's still a chance they could award you the mark but my guess would be that without the 'fission' part in your answer, you'll most likely drop a mark there.

Another poster said after going through the paper with their teacher, she was told there was no overall dipole. But someone else posted later on and said their teacher told him the expected answer at A level for that question is usually a dipole is present. So, we don't actually know for sure.

OMG i also just put homolytic as well!!! Ah man, i better not lose that easy mark! =.=

Now I'm over-thinking and can't remember whether I put the whole thing or just homolytic

LOOL don't stress yourself woman I'm sure they'll accept it, since in most papers they do allow just 'homolytic'.

And they did ask what 'type' of bond breaking process it is...not just 'what type of process is this called?' If they asked that question then it would make sense to write in the fission bit...if that makes sense.

Oh, if it asked for the type of bond breaking then they may allow just homolytic. We'll see.

Look at the F332 Mark Scheme for January 2010. Link below. Answer for question 1)(c)(i) says; Homolytic (fission) / Homolysis. The words in the brackets are not required. You will get the mark

http://www.ocr.org.uk/download/ms_10/ocr_50007_ms_10_gce_jan.pdf

Ahh yes! I can relax now...well sort of

can you like loose 30 odd marks, and still get an A in F332 Unit?

Well it really depends on UMS. It wasn't a bad paper, so I'm guessing the grade boundaries might have been high. You could still get an A if the grade boundaries are low.

you know for the bonding question where it asked what form of intermolecular bonding is present in this molecule:

is it acceptable to write permenant dipole- permanent dipole attraction as opposed to hydrogen bonding because both are present and the question doesnt specifify which oen to write...

AGRH i was debating in my head which one to write :*(

100% =D (though with hyphens but OCR dont care)

OCR have released the grade boundaries.
Raw mark for an A is 80.

http://pdf.ocr.org.uk/download/admin/ocr_69851_admin_unit_grd_bound_june_12.pdf?

i think 80 is pretty high for an A considering previous years it is around 70, what does everyone else think?