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OCR Chemistry F322~ 4th June 2013~ AS Chemistry

Reply 160

Tesana

Chemistry qualitative tomorrow, real freaked out. Hope I do well. :smile:

Reply 161

JamesNeedHelp2

5

*subscribed*

Anyone who wants to do a Q/A session- feel free to quote me :smile:

(edited 11 years ago)

Reply 162

Dan1300

I have my third retake tomorrow to try to get 10/10. Our teacher gave us a hint about red litmus paper turning blue with ammonia. If anybody else has done this test what other questions/experiments will come up in this paper?

Reply 163

Gotzz

13

Original post by purplemind

That's the one I'm going to do on Monday. :biggrin:

Ah cool! Well good luck, it's pretty straight forward and definitely better than titrations :redface:

Reply 164

Jimmy20002012

OP

4

Original post by Dan1300

I have my third retake tomorrow to try to get 10/10. Our teacher gave us a hint about red litmus paper turning blue with ammonia. If anybody else has done this test what other questions/experiments will come up in this paper?

I remember when I did this one, I got something like 2/10 because didn't write enough information to get the marks, luckily I got 10/10 in the other two :smile:

You should do fine in this one, just remember to observe the reaction and put as much information as possible! :smile:

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Reply 165

Dan1300

Apparently theres one particularly hard/unusual question that will come up
Any idea what it is? Also the experiment involve either group 2 or group 7 elements? :smile:

Reply 166

Kawaiizombii

I'm doing my first practical exam on Thursday, its the quatitative one and I've been told it involves making an acid and doing a titration. I only got 7/15 on my practice because my titration was really inaccurate so I'm really worried about the real thing :frown:

Does anyone have any tips on how to do good titrations or ideas on what questions may be on the paper I would really appreciate any advice you can give :smile:

Reply 167

That_Clever_Guy

2

Original post by Kawaiizombii

I'm doing my first practical exam on Thursday, its the quatitative one and I've been told it involves making an acid and doing a titration. I only got 7/15 on my practice because my titration was really inaccurate so I'm really worried about the real thing :frown:

Does anyone have any tips on how to do good titrations or ideas on what questions may be on the paper I would really appreciate any advice you can give :smile:

Uhm yeh I can remember doing this one :smile:

just make sure that all your titre values are within 0.1 cm^3 away from each other before calculating your mean also only quote to two decimal places and your second decimal can only be 0 and 5 (hope that makes sense, so you can have 11.95 or 11.90 but not 11.93 or 11.93 :smile:

the actual questions were not that challenging but saying that i dropped two marks somewhere :smile:

and be careful with significant figures and your units and you should get 15/15 :smile:

btw i got 13/15 in this :frown:

EDIT: from what I can remember they ask for your MEAN titre to ONE decimal place soo be careful with that

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(edited 11 years ago)

Reply 168

Kawaiizombii

Original post by That_Clever_Guy

Uhm yeh I can remember doing this one :smile:

just make sure that all your titre values are within 0.1 cm^3 away from each other before calculating your mean also only quote to two decimal places and your second decimal can only be 0 and 5 (hope that makes sense, so you can have 11.95 or 11.90 but not 11.93 or 11.93 :smile:

the actual questions were not that challenging but saying that i dropped two marks somewhere :smile:

and be careful with significant figures and your units and you should get 15/15 :smile:

btw i got 13/15 in this :frown:

EDIT: from what I can remember they ask for your MEAN titre to ONE decimal place soo be careful with that

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thankyou so much, very helpful!

Reply 169

That_Clever_Guy

2

Original post by Kawaiizombii

thankyou so much, very helpful!

No problem :smile:

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Reply 170

furryface12

21

Original post by Kawaiizombii

I'm doing my first practical exam on Thursday, its the quatitative one and I've been told it involves making an acid and doing a titration. I only got 7/15 on my practice because my titration was really inaccurate so I'm really worried about the real thing :frown:

Does anyone have any tips on how to do good titrations or ideas on what questions may be on the paper I would really appreciate any advice you can give :smile:

If you think you have a bad result, redo it- you have time, and it's better to be accurate. If you start at 0, make sure you put 0.00 as it MUST be to 2dp, or you lose a mark. Finally, practice doing the relevant calculations, as even if you have the wrong results you should get the marks for these :smile:

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Reply 171

Student296

8

Need to learn as much of unit 2 as I can from the beginning. What grade can I get if I just use the CGP revision guide?

Reply 172

IGCSE

has anyone got a copy of the jan 2013 F322 paper ? thanks

Reply 173

Kawaiizombii

Original post by furryface12

If you think you have a bad result, redo it- you have time, and it's better to be accurate. If you start at 0, make sure you put 0.00 as it MUST be to 2dp, or you lose a mark. Finally, practice doing the relevant calculations, as even if you have the wrong results you should get the marks for these :smile:

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