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OCR GCSE Chemistry C1,C2,C3 - Tomorrow - Discuss

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Reply 40

Jack1246

What grade are u guys aiming for?

Reply 41

Jack1246

I put that but was unsure so changed it

Reply 42

Hppy_bug

i'd love an A* but chem's my weakest science and I haven't been that great with revision :') probably an A? Then an A* in physics and bio. You? :smile:

Reply 43

aha1

What were the numbers for the balancing equation where the electrons were lost and it was an oxidation

Reply 44

lilyjacks

For the advantage of fertilisers I put it helps supply for the growing population, will I get the mark??

Reply 45

Hppy_bug

Original post by lilyjacks

For the advantage of fertilisers I put it helps supply for the growing population, will I get the mark??

i hope so, i put that too! :smile:

Reply 46

hsgta123

Original post by Cookiemonster057

0.6 for the highest reaction rate
Ph 6 for most repeatable.

Me too!

Reply 47

hsgta123

Original post by lilyjacks

For the advantage of fertilisers I put it helps supply for the growing population, will I get the mark??

i put that too :smile:

what did you put for the disadvantage?

Reply 48

Mudas

Original post by hsgta123

i put that too :smile:

what did you put for the disadvantage?

Eutrophication :biggrin:

Reply 49

Lewisabcxyz

Does anyone remember roughly how many marks there were after the final 6 marker on acid concentration? Thanks

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Reply 50

Hppy_bug

Original post by HarrisonGCSE

Eutrophication :biggrin:

Same!

Reply 51

hsgta123

what did everyone get for the atom economy and predicted yield question? D:

Reply 52

Hamzasimba

Original post by hsgta123

what did everyone get for the atom economy and predicted yield question? D:

I think I got like 10.3 for atom economy but im not sure if its right :?

Reply 53

aha1

Original post by hsgta123

what did everyone get for the atom economy and predicted yield question? D:

Atoms economy was 90 and predicted yield was 12.7

Reply 54

hsgta123

Original post by aha1

Atoms economy was 90 and predicted yield was 12.7

woop! thats what i got :biggrin:

Reply 55

Hamzasimba

Original post by hsgta123

woop! thats what i got :biggrin:

How did you get that? Wasn't it the Mr of the Products (excluding the waste product) / by the total Mr of the reactants?

Reply 56

DaringDaniel

Original post by Hamzasimba

How did you get that? Wasn't it the Mr of the Products (excluding the waste product) / by the total Mr of the reactants?

Hi no it's useful product over the sum of products.

Reply 57

Cookiemonster057

Grade boundary ideas? I know they'll be higher than last year cos loads of people found this easier but I want them to be as low as possible cos I made silly mistakes :s-smilie:

Realistically it'll probably be 66/75 -A*

Reply 58

aha1

Original post by Cookiemonster057

Grade boundary ideas? I know they'll be higher than last year cos loads of people found this easier but I want them to be as low as possible cos I made silly mistakes :s-smilie:

Realistically it'll probably be 66/75 -A*

Personally I think it will stay the same. I think the paper was quite similar to 2014 and also ocr science has always had fair boundaries that are really quite reasonable so I think it would be quite harsh to raise them so high. Guess we'll just have to wait and see!