Ocr f321 , f322 retakes on 27/05/16 and 10/06/16

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You can't make it from hydrogen itself. You have to have an unsaturated plant oil. You vaporize it, pass it over a nickel catalyst at 60 degrees Celsius and add hydrogen.

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Why is importance placed on it being a plant oil?

Reply 101

mliela

Original post by President J

Why is importance placed on it being a plant oil?

Because you cant make margarine from hydrogen. By hydrogen is just added to the oil. Plant oils are always used.

(edited 7 years ago)

Reply 102

GetOverHere

Original post by President J

Why is importance placed on it being a plant oil?

Uh, because you're going to be eating the margarine after, so it's important that what you're using is edible?

Reply 103

sophiebookley

Original post by jonsnow:(

Honestly, I know it sounds cliche but flashcards ! !! !!!

Just write the reaction on one side and the answer on the other side and test yourself, it honestly helps so much. Even the process of making the flashcards is a big help with memorisation.

I've made flashcards for the whole of A2 chem and it's helped with not getting confused between similar reactions and reagents and what not!

I'm in the same boat though, I got 90 something UMS and I'm hoping for an A so I can maybe get a B somehow :frown:

I heard everyone found that Stats exam hard so don't worry about aha!

Thanks so much for the help guys! I'll definitely try both of those techniques for Chemistry in general. Can't wait to be finished with Chemistry for good! It's just not my thing, unfortunately. I seem get C's or B's no matter how hard I try.

Good luck with your revision. :biggrin:

Reply 104

bakedbeans247

Original post by Fine Sir

A Twitter post I saw about it said this:

"#F321 predictions:
Dative cov bond
SIlver nitrate test
Metallic bonding
H-bonding diagram
Reactivity down a group
Water of crystalisation"

I would just ensure my understanding of this but not totally tunnel vision on it :smile:

Who was that tweet by? I would really like to know if there are any f322 predictions for tomorrow! Do you have any? Thanks :smile:

Reply 105

bakedbeans247

F322 predictions anyone?

Reply 106

drandy76

Original post by bakedbeans247

F322 predictions anyone?

Heard there will be a question on analytical techniques

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Reply 107

hbob

Any predictions for the f322 paper?

Reply 108

Rxayz

you cant really predict f322 as they ask questions on everything

Reply 109

Rxayz

if you still need help its best you watch https://www.youtube.com/user/MaChemGuy for a walk through of last years pape

Reply 110

Fine Sir

Heya guys, The paper is so big that they generally question you on everything so good luck :smile:

Reply 111

CrazyFoxes

Cant really predict anything since we dont have the mark scheme or the paper for june 2016 :smile:

Reply 112

jonsnow:(

Er, just did the 2015 paper and literally scrapped an A - why the heck were grade boundaries so high last year :confused:

EDIT: just checked and 2014 was 74 and 2013 was 82, goodbye A hello B possibly a goddamn C again

Reply 113

safhassan

Original post by jonsnow:(

Er, just did the 2015 paper and literally scrapped an A - why the heck were grade boundaries so high last year :confused:

EDIT: just checked and 2014 was 74 and 2013 was 82, goodbye A hello B possibly a goddamn C again

Lets be a bit optimistic here , I'm sure everyone including you here will ace it . Everyone brush up on definitions and mechanisms.

Reply 114

WhatALad

Agreed, went way better than last year

Reply 115

jirapat121

Well the grade boundary is gonna be high af lol

Reply 116

NinjaOtter

It was amazing :biggrin:

Only things I couldn't remember was the formation of Ethanol with yeast and how Nitrogen Monoxide is formed. I probably dropped a few marks elsewhere but apart from that it was great.

Reply 117

jirapat121

Original post by NinjaOtter

It was amazing :biggrin:

Only things I couldn't remember was the formation of Ethanol with yeast and how Nitrogen Monoxide is formed. I probably dropped a few marks elsewhere but apart from that it was great.

I dropped 2 marks on the alcohol boiling points question apart from that it's fine

Reply 118

sophiebookley

I LOVED that paper. Seriously thinking I could have gotten a decent A on it and I was only aiming for a C/B! :O

Also, thanks to everyone that suggested @MaChemGuy for revision! His mechanism video and past paper videos were super useful, definitely going to use them to revise for F324 and F325! :smile:

Reply 119

safhassan

that was super gooooooooooooooooooooooooooooooooooooooooooooooooood