OCR A2 Chemistry Unit 5, F325 15th June 2015

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Reply 1280

HAnwar

Original post by Yua

I started past papers only a week before each exam last year and managed to get A's, so i'll be fine

That's good then :yy:

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Reply 1281

TheLegalDealer

Any advice on how to score high on F324 did my first proper paper today and got 40 :frown:

while on f325 I'm in the range of 80 - 90

Reply 1282

User1686961

Original post by TheLegalDealer

Any advice on how to score high on F324 did my first proper paper today and got 40 :frown:

while on f325 I'm in the range of 80 - 90

Umm learn the topics you loosing marks in?

How you getting solid A in f325 but barely a B in f324?

How you revise F325?

Reply 1283

Yua

Original post by TheLegalDealer

Any advice on how to score high on F324 did my first proper paper today and got 40 :frown:

while on f325 I'm in the range of 80 - 90

Well how many f325 papers have you done?

if you've only done 1 f324 paper but like 5 f325 papers then it's not really a fair comparision

Reply 1284

TheLegalDealer

Original post by ThatGuyRik

Umm learn the topics you loosing marks in?

How you getting solid A in f325 but barely a B in f324?

How you revise F325?

I find F325 more logical as its basically all calculations and memorising stuff

I revise F325 by using flash cards and writing all of the spec points on them

Other than reagents and conditions of reactions , that's all you can really memorise for f324 but I don't find most things difficult just NMR spec and stereoisomers

Reply 1285

TheLegalDealer

Original post by Yua

Well how many f325 papers have you done?

if you've only done 1 f324 paper but like 5 f325 papers then it's not really a fair comparision

I've done several , so you might be right but things like stereo isomers related Qs I lose marks in, so it may be worth focussing on that

Reply 1286

justfly

When do you guys get study leave?

Reply 1287

Yua

Original post by justfly

When do you guys get study leave?

may 25

Reply 1288

justfly

Original post by Yua

may 25

ah mines 22nd I believe, so what's your plan from now till the chemistry exams? Just going over the content to make sure you don't forget it?

Reply 1289

Yua

Original post by justfly

ah mines 22nd I believe, so what's your plan from now till the chemistry exams? Just going over the content to make sure you don't forget it?

past papers + reading the textbook

Reply 1290

ETRC

Original post by TheNoobishKnight

have you got full marks everytime you did each of them? If not I'd say go back and do them again.

i will only do question i got wrong because i can memorise the questions i got right

jan 13 was the hardest paper i think and june 13 was quite easy.

you need 95 max for full ums anyways.

Reply 1291

AnnekaChan173

Original post by TheLegalDealer

Any advice on how to score high on F324 did my first proper paper today and got 40 :frown:

while on f325 I'm in the range of 80 - 90

How do you manage that!? I think you need to spend time practicing unit 4 questions. Reread your notes or textbook and tackle the things you find hard rather than the things you can do. Try try try again.

Original post by justfly

When do you guys get study leave?

Next week Friday wooooooo

Reply 1292

Yua

how would i even do this

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Reply 1293

plasmaman

Original post by Yua

how would i even do this

VI means ox. state of iron is +6
Overall charge of the ion is 2-
Ox. state of oxygen is 2-
So four oxygens (4×-2=-8) gets us down from +6 (ox. state of iron) to -2 (overall charge)
So FeO4 2-

(edited 8 years ago)

Reply 1294

Yua

Original post by plasmaman

VI means ox. state of iron is +6
Overall charge of the ion is 2-
Ox. state of oxygen is 2-
So four oxygens (4×-2=-8) gets us down from +6 (ox. state of iron) to -2 (overall charge)
So FeO4 2-

why oxygen though

Reply 1295

HAnwar

Original post by Yua

why oxygen though

The suffix 'ate' usually means it has an oxygen (ferrATE)

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Reply 1296

Yua

Original post by HAnwar

The suffix 'ate' usually means it has an oxygen (ferrATE)

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yes but it doesn't mean it has only oxygen

Reply 1297

HAnwar

Original post by Yua

yes but it doesn't mean it has only oxygen

I know it says iron metal in the question as well.

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Reply 1298

Mutleybm1996

Original post by plasmaman

VI means ox. state of iron is +6
Overall charge of the ion is 2-
Ox. state of oxygen is 2-
So four oxygens (4×-2=-8) gets us down from +6 (ox. state of iron) to -2 (overall charge)
So FeO4 2-