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AQA GCSE Chemistry 8462 - Paper 2 - 12th June 2019

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Reply 60

Georgie3333

don’t think we do need to know the fractions
but it’s worth remembering I just in case

Reply 61

PrincessAnime2

Just the moles equations

Original post by Jojoxx

Like atom economy and percentage yield or just the moles and stuff? 😂

Reply 62

PrincessAnime2

It's not on the specification but in the last few years it has come up on paper 2 and my teacher said it can come up

Original post by BrandonS15

Where on the specification does it say that?

Reply 63

blobbb

Original post by BrandonS15

Where on the specification does it say that?

Wth even is that
Can you give me an example as to a question they could ask about it

Reply 64

RazzzBerries

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Original post by 8472

I'm sure you'll do well :tongue:

Smash it!

Thank you

Reply 65

AksSin

Do you think calculations and structure and bonding could come up in paper 2 because I looked through the specimen and last year's paper and I believe that there was no content from paper 1

Reply 66

blobbb

But W has been covered with magnesium ribbon which is more reactive than iron so it would act as a sacrificial material and it would react with the oxygen and water instead of letting the iron react with the oxygen and water
But test tube Z has been covered in tin (sacrificial material) but it’s been scratched so the iron underneath it is now exposed to the water and oxygen so it’s more likely to rust

Original post by UnbelievablyEasy

Exactly. So surely the question is wrong or he has read it incorrectly, because W would rust faster than Z, with greater exposure to water and air?

Reply 67

blobbb

Ikkk I haven’t learned that and I’m not bothered to learn that now neither

Original post by rf14

can someone please tell me if we need to know what comes out of the fractions of fractional distillation (kerosene etc)?! thanks

Reply 68

BrandonS15

Original post by PrincessAnime2

It's not on the specification but in the last few years it has come up on paper 2 and my teacher said it can come up

I see what you mean, really rarely it will come up as molar ratios or something basic. Definately won’t involve the formulas. Thats Paper 1 content.

Reply 69

EvilBunny6101

Original post by Lucas6485

The question says: Suggest why the iron in test tube Z rusts faster than in tube W

Has anyone got any ideas?

The zinc in test tube z is there fore sacrificial protection. Since iron is more reactive then zinc, corrosion will occur more quickly on the iron, then it will on the zinc?
Idk to be honest.

Reply 70

Jomel123

who else is up early tryna revise the whole spec

Reply 71

poopatron

Original post by Jomel123

who else is up early tryna revise the whole spec

Reply 72

username4812746

Original post by PrincessAnime2

Just the moles equations

Okay, thankss

Reply 73

6ambz

literally me ive done topic 1 6,7,8 and ive just briefly gone over topic 9 so im so scared cause i dont know it in detail im gonna try go over it i have one hour. Good lUck!!!!

Reply 74

username4812746

Original post by 6ambz

literally me ive done topic 1 6,7,8 and ive just briefly gone over topic 9 so im so scared cause i dont know it in detail im gonna try go over it i have one hour. Good lUck!!!!