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

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Original post by Jitesh
That's fine it would be alright for any suitable reagent
Br2 would just show a clearer colour change and is normally used in experiments so it would probably be more common for people to put that


for what?
Original post by Major Wilson
We didn't do any mechanisms therefore I think the following will come up:
-Mechanism(s) of any reactions
-Ozone depletion
-Group 2 and trends
-Analytical techniques e.g. MS, IR...

Any others?


Collision theory?
Identification of ions?
Original post by A Sajid
-Types of bonding e.g London forces
-History of the periodic table
-Catalysts
-Polymers


ALSO:
-Boltzmann Distributions
-Energy Profile Diagrams
-Alcohol Reactions (only came up in MCQ)
-Possibly esterification
Original post by tamoni4
Collision theory?
Identification of ions?


Tests for Ions did come up
Original post by A Sajid
You seem to have this under control. What textbook/ revision guide/ material did you use?


Didn't really prepare specifically for this exam i.e. cram the night before but I learnt the content with the school textbook we were given which was the Oxford one
It goes into more detail than needed but it helps with understanding

What do you use?
Original post by tamoni4
Collision theory?
Identification of ions?


There were plenty of tests for ions questions that came up today though...
Original post by A Sajid
-Types of bonding e.g London forces
-History of the periodic table
-Catalysts
-Polymers


Do you reckon we will get directly tested on HSW stuff they have on the spec like that triad stuff from GCSE?
Original post by A Sajid
Tests for Ions did come up


Updated list:
-Mechanism(s) of any reactions
-Ozone depletion
-Group 2 and trends
-Analytical techniques e.g. MS, IR...
-Types of bonding e.g London forces
-History of the periodic table
-Catalysts
-Polymers
-Collision theory
-Identification of ions
-Boltzmann Distributions
-Energy Profile Diagrams
-Alcohol Reactions (only came up in MCQ)
-Possibly esterification

Well this looks like a lot of work:frown:
Original post by Major Wilson
There were plenty of tests for ions questions that came up today though...


2 marks worth wasn't it? One MCQ and another 1 marker?
Original post by Jitesh
2 marks worth wasn't it? One MCQ and another 1 marker?

Yes so there is not much more they can ask about except test for NH4+
Original post by A Sajid
Updated list:
-Mechanism(s) of any reactions
-Ozone depletion
-Group 2 and trends
-Analytical techniques e.g. MS, IR...
-Types of bonding e.g London forces
-History of the periodic table
-Catalysts
-Polymers
-Collision theory
-Identification of ions
-Boltzmann Distributions
-Energy Profile Diagrams
-Alcohol Reactions (only came up in MCQ)
-Possibly esterification

Well this looks like a lot of work:frown:


We don't do esterification at AS.
Original post by Major Wilson
We didn't do any mechanisms therefore I think the following will come up:
-Mechanism(s) of any reactions
-Ozone depletion
-Group 2 and trends
-Analytical techniques e.g. MS, IR...

Any others?


Electronegativity (posssibly Pauling values, van Der Waals, permanent dipoles)
Practical questions - maybe titrations, standard solutions, organic synthesis as in separating and purifying products
Hess' Law?
Rate of reaction
BOLTZMANN is very likely imo
Bonding (giant covalent, simple molecular etc)
Properties of alcohols and alkanes


Basically the stuff that hasn't come up but it's still a good idea to go other the stuff that we've already revised and have a look at the specification.
(edited 7 years ago)
Original post by Jitesh
Do you reckon we will get directly tested on HSW stuff they have on the spec like that triad stuff from GCSE?


Well defo be tested on the practicals weve done. Thats certain. Theyll be putting HSW into those.
And I used CGP. Big mistake. They drift over everything trying to simplify it.
Original post by h3rmit
If you mean the last last question, you had to substitute hydroxyls in the place of halogens through nucleophilic substitution, you can't just add oxygens


I think (read: hope) two marks


... Well there goes my grade. Gosh, I really hope they don't have a high grade boundary.


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Original post by SGHD26716
I used 100 as they mixed the two solutions together


But the other one was in excess..
Original post by mydearestpotato
Electronegativity (posssibly Pauling values)
Practical questions - maybe titrations, standard solutions, organic synthesis as in separating and purifying products
Hess' Law?
Rate of reaction
BOLTZMANN is very likely imo

Basically the stuff that hasn't come up but it's still a good idea to go other the stuff that we've already revised and have a look at the specification.


I swear Hess law came up today? The combustion one.
Original post by tamoni4
We don't do esterification at AS.


They still have a right to test 'unfamiliar scenarios' to stretch and challenge so although it's not directly on the spec they can still give you enough info about it and ask you a question or something on it

It's unlikely though but it was a GCSE topic I think for most exam boards
was the shift position in the le chet. question to the right? and in the second (Kc) part, to the left?
Original post by A Sajid
I swear Hess law came up today? The combustion one.

It might come up again as in the more complicated/unfamiliar onesScreenshot_2016-05-27-12-07-27-1.png
Original post by A Sajid
Well defo be tested on the practicals weve done. Thats certain. Theyll be putting HSW into those.
And I used CGP. Big mistake. They drift over everything trying to simplify it.


I've got the CGP guide but didn't use it much through-out the year as I felt it over simplified everything, especially some of the IR diagrams they have

I guess it does cover key points though

I also used the spec through-out the year as well which is quite useful

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