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OCR AS - Chemistry Unit F322 - Chains, energy and resource - REVISION!

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FML, done no revision. What's the likelihood of me getting at least 70% (gotta get this to get an A) if I start now? :smile:

Reply 341

Joshc93

Original post by croag

FML, done no revision. What's the likelihood of me getting at least 70% (gotta get this to get an A) if I start now? :smile:

Not that bad tbh, Do all the past papers (there's only four) print off the spec and try and learn what you can tonight, there's still hope :smile:

Reply 342

YingYang

Original post by croag

FML, done no revision. What's the likelihood of me getting at least 70% (gotta get this to get an A) if I start now? :smile:

Then learn all the calculation questions: enthalpy, %yield and atom economy. They're the easiest to route learn and easy to pick up marks in exams with.

learn the 3 reaction mechanisms, definitions as well which are the on specification.

Then just do past papers/cram anything else in.

Reply 343

timkench

has anyone got the past grade boundaries?

Reply 344

EternalDoom

My teacher's made us do a **** load of revision for unit 2, cos he said people generally tend to do worse on unit 2, ive done like 15 past papers including ones from old spec like 4-5 times each, and cannot wait for this exam, it's going to be fun xD

Reply 345

Ste2210

i hope they dont bring up too much of the green chemistry stuff.. its so wordy and boring!

Reply 346

J DOT A

Original post by EternalDoom

CFCL3 ----> (UV) ----> CFCL2. + CL.
O3 + CL. -----> CLO + O2
CLO + O ----> O2 + CL.

So: 2O3 ---- 3O2

Is it not 03+0------>202?

And Is the rate of formation of Ozone the same as the rate of decomposition?

and Q is wherever the surroundings are right?

Reply 347

EternalDoom

Original post by Ste2210

i hope they dont bring up too much of the green chemistry stuff.. its so wordy and boring!

Green chemistry is awesome, everything is awesome in this unit :3

it was the first unit that was so boring.....apart from electron structure xD

Reply 348

ChessMister

Original post by J DOT A

Is it not 03+0------>202?

And Is the rate of formation of Ozone the same as the rate of decomposition?

and Q is wherever the surroundings are right?

how's Mongolia working out for you?

Reply 349

J DOT A

Original post by ChessMister

how's Mongolia working out for you?

Birthplace of Chinggis Khan so not all bad :wink:

Reply 350

ChessMister

Original post by J DOT A

Birthplace of Chinggis Khan so not all bad :wink:

Grand! I have seem the film Mongol and consider myself part Mongol, though I have never met a Mongolian (sad but true).

Reply 351

sixthformer

Original post by EternalDoom

Green chemistry is awesome, everything is awesome in this unit :3

it was the first unit that was so boring.....apart from electron structure xD

our teachers gave us nothing in terms of preparation relative to yours

but i've worked

any ideas on topics coming our way tomorrow?

Reply 352

Bright

Original post by croag

FML, done no revision. What's the likelihood of me getting at least 70% (gotta get this to get an A) if I start now? :smile:

Done nothing so far. Need to get a good A and gonna revise tonight. It better work!

Reply 353

YingYang

Original post by sixthformer

our teachers gave us nothing in terms of preparation relative to yours

but i've worked

any ideas on topics coming our way tomorrow?

How can anyone make a logical prediction on what will come up? And most things come up, considering how this is longer test and all.

Reply 354

EternalDoom

Original post by YingYang

How can anyone make a logical prediction on what will come up? And most things come up, considering how this is longer test and all.

Everything and anything :wink:

Reply 355

ChessMister

Original post by EternalDoom

Everything and anything :wink:

anything was on last years paper. don't think they'd put it on again so soon.

Reply 356

touran22

Original post by J DOT A

Is it not 03+0------>202?

And Is the rate of formation of Ozone the same as the rate of decomposition?

thats what i thought the overall equation was...can some one please clarify!

and yes The rate or formation of ozone = The rate of decomposition <----- this statement is for o3+o--->2o2

Reply 357

sixthformer

Original post by EternalDoom

Everything and anything :wink:

then may God be with us, thank you.

Reply 358

*Funky-buddha*

I need an A in this exam seeing as it is a retake, yet have done little or no revision.
I love my logic.

Reply 359

J DOT A

As the OCR F212 Biology had alot of "BS" you can bet your bottom dollar that this paper will be full of questions on "sustainability", Percentage yield, atom economy, the uses of enzymes and the hydration/fermentation to prodcue ethanol.

But I shouldn't be telling you this as I don't want the grade boundaries to be high:P