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AQA A2 CHEM4 Revision Thread (Wednesday 27th January AM)

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please can someone tell me what amphoteric means aswell as ootherr terms like zwitterion, condensation ppolymer addition polymer

Reply 61

Circularmover

*MJ*

pH, buffers, anything like that is a gift! :smile:

Structure Determination can be improved with practice. :yep:

Good luck. :woo:

lol...are u some chem god or something? are you resitting?

Reply 62

Big.Juicy.Orange.

to be honest, people doing AQA so shouldnt be complaining.

you should try doing Salters.
and then you will see how hard chemsitry becomes when it is taught in stoopidest order ever where nothing makes sence. such as, to answer some questions for the january module you need to know and understand things from the june module!

it blows my mind.
and i would love to do AQA

Reply 63

*MJ*

felt_monkey

Okay

. If you could please talk me through how you'd do it I'd be very grateful. I'm not too sure how to go about this because I think you need to use the picture. So I'll post the link of the paper: http://store.aqa.org.uk/qual/gceasa/qp-ms/AQA-CHM4-W-QP-JAN07.PDF

Page 11, part e of question 4. Thank yoooou :biggrin:

Ahh, that's the integration trace ratio.

Which refers to the area under the peak not the peak splitting.

The integration trace for the first peak is 0.4 and this has 1 H due to the double peak on the adjacent carbon.

The 2.4 is 6 times larger than this suggesting that it has 6 H's.

That is all the question is asking. :smile:

This can also be worked from the other side where the compound is CH3 and twice as big (2.4 compared to 1.2) so it is 2 CH3 groups which is still 6 H's

:smile:

Reply 64

Mask Of Sanity

*MJ*

That's Core 6. :colonhash:

Yeah I do Stats. :ahee:

Now you can ~~help me~~ ask me for help. :colonhash:

Hey. I need help with a little summat summat.

Reply 65

*MJ*

Circularmover

lol...are u some chem god or something? are you resitting?

Nope.

All first time.

But to be fair, CHEM4 and Core 3 are the only things i've read over so far. :p:

So if you asked me about BIOL4, I would be like... :lolwut:

Reply 66

Mask Of Sanity

*MJ*

She's going to have to wait until I dump you for that. :sexface:

Which is never going to happen. :love:

We'll see swinger boy, albeit that we're very open. Or, I am. :ninja2:

Reply 67

*MJ*

Vote for *MJ* as Best Male in the TSR Awards. :woo:

Reply 68

Circularmover

*MJ*

Nope.

All first time.

But to be fair, CHEM4 and Core 3 are the only things i've read over so far. :p:

So if you asked me about BIOL4, I would be like... :lolwut:

LOL ask me about BYB4 n i'l be like :biggrin:

Reply 69

*MJ*

Circularmover

LOL ask me about BYB4 n i'l be like :biggrin:

Haha.

We should do a fusion. :five:

http://www.thestudentroom.co.uk/forumdisplay.php?f=351

Vote for me. :woo:

PHYA4 rawks.

Smeh

PHYA4 rawks.

I don't have that in Jan. :frown:

But woo on your Imperial offer.

:woo:

Reply 72

*MJ*

doctobe

please can someone tell me what amphoteric means aswell as ootherr terms like zwitterion, condensation ppolymer addition polymer

Since when was this in our spec?

Zwitterion = acts like base and act; donates and accepts proton.

Additional polymer = monomer contains double bond and breaks to form long chain polymer.

Condensation polymer = two different monomers lose a water molecule to join together.

:smile:

Reply 73

h-star

I haven't done any chem in such a long time.. I really should.. :erm:

Reply 74

Smeh

*MJ*

I don't have that in Jan. :frown:

But woo on your Imperial offer.

:woo:

Thank you!
It's the sex. What module option are you doing for unit 5? I can't find any resources for applied physics anywhere and my whole class wants to do medical physics.
Gays.

Reply 75

*MJ*

Smeh

Thank you!
It's the sex. What module option are you doing for unit 5? I can't find any resources for applied physics anywhere and my whole class wants to do medical physics.
Gays.

Haha mine too.

Teacher picked Astro in the end.

I think turning points would be quite cool in the applied.

My bros a mechanical engineer. :cool:

Reply 76

0zero0

anyone started synthetic route???? its so hard!

Reply 77

felt_monkey

*MJ*

This can also be worked from the other side where the compound is CH3 and twice as big (2.4 compared to 1.2) so it is 2 CH3 groups which is still 6 H's

:smile:

Ahhh! Okay. A-thank you :biggrin:

Reply 78

Circularmover