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Edexcel IGCSE Chemistry (Linear) Paper 2C - 13th June 2025 [Exam Chat]

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How did your Edexcel IGCSE Chemistry (Linear) Paper 2C exam go?

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Total votes: 36

Talkative Toad

22

Edexcel IGCSE Chemistry (Linear) Paper 2C (4CH1 2C) - 13th June 2025 [Exam Chat]

Welcome to the exam discussion thread for this exam.
Introduce yourself! Let others know what you're aiming for in your exams, what you are struggling with in your revision or anything else.

Wishing you all the best of luck. :yy:

General Information
Date/Time: 13th June/ AM
Length: 1hr 15m

Good luck!
Click here to find exam discussions for other GCSE subjects

Reply 1

nogzy

9

predictions?

Reply 2

groovy123124

3

Original post

by nogzy

predictions?

dyk if crude oil came up like fractional distillation ect i can't remember icl

Reply 3

isaac123444566

18

Original post

by groovy123124

dyk if crude oil came up like fractional distillation ect i can't remember icl

it didn't really - at least not specific fractions

Reply 4

nogzy

9

Original post

by isaac123444566

it didn't really - at least not specific fractions

yh i feel like theres gonna be a 4 marker on how crude oil is seperated into fractions or sum like that

Reply 5

isaac123444566

18

Original post

by nogzy

yh i feel like theres gonna be a 4 marker on how crude oil is seperated into fractions or sum like that

yeah tbf that's pretty light - it'll mostly be triple contents only - so like equilibria, electrolysis, latter parts of organic, etc.

Reply 6

Nonexistent

3

Hi, can anyone tell me all the topics that came up in p1?

Reply 7

isaac123444566

18

Original post

by Nonexistent

Hi, can anyone tell me all the topics that came up in p1?

i mean pretty much everything mate

Reply 8

SilentPrincess13

17

Original post

by Nonexistent

Hi, can anyone tell me all the topics that came up in p1?

You could read through the exam chat for paper 1 :dontknow:

Reply 9

username453647

2

Original post

by nogzy

yh i feel like theres gonna be a 4 marker on how crude oil is seperated into fractions or sum like that

yeah and i think electrolysis, equilibrium/yield and organic chemistry will come up

Reply 10

isaac123444566

18

Original post

by username453647

yeah and i think electrolysis, equilibrium/yield and organic chemistry will come up

Yeah because they’re only paper 2 - that’ll be the majority of the paper

Reply 11

friedegg123

1

anyone have any educated predictions not in a rude way as in not just what they feel but a reason to their prediction?

Reply 12

isaac123444566

18

Original post

by friedegg123

anyone have any educated predictions not in a rude way as in not just what they feel but a reason to their prediction?

only thing we can predict is that later organic chem, equilibrium, titrations and electrolysis will make up probably like at least 30-40% of the paper because they're only paper 2. We can't predict which double award content will come up tbh - all of the predictions are pretty much guesses otherwise.

Reply 13

nogzy

9

this was miss hazels predictions in summary

. Equilibria

•

Effects of temperature and pressure on equilibrium.

•

Know the difference between exothermic and endothermic reactions.

•

Understand impact on yield and rate of reaction:

•

Lower temperature ⟶ higher yield (exothermic), but slower rate.

•

Link to collision theory and kinetic energy.

2. Electrolysis

•

Electrolytes must be molten or in solution for ions to move.

•

Discharge rules:

•

Positive ions: Least reactive element (e.g. hydrogen, copper).

•

Negative ions: Halogens first, then oxygen.

•

Be confident with:

•

Half-equations

•

OIL RIG mnemonic (Oxidation Is Loss, Reduction Is Gain)

3. Organic Chemistry

•

Know structures and functional groups of:

•

Alcohols

•

Carboxylic acids

•

Esters

•

Understand:

•

Addition polymerisation (e.g. alkenes)

•

Condensation polymerisation:

•

Often forms polyesters

•

Involves dicarboxylic acids + diols

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Produces water as a by-product

4. Titrations

•

Practical setup: burette, conical flask, indicator (e.g. phenolphthalein or methyl orange – not universal indicator).

•

Be able to:

•

Describe titration method accurately.

•

Perform calculations to find unknown concentrations (using mol = c × v).

•

Use balanced equations in context.

Reply 14

groovy123124

3

i just don't get godanm polymersiation

Reply 15

isaac123444566

18

Original post

by groovy123124

i just don't get godanm polymersiation

Alr:

A polymer is just a chain of different molecules
There are 2 types: addition polymers, where loads of alkenes are just added up in a row, or condensation polymers, which is a bit harder. To be honest, it's pretty hard to teach without like diagrams or drawings, but if u watch like a science with hazel video or something else on youtube it'll help u visualize it. If u have any questions tho ofc u can ask me

(edited 8 months ago)

Reply 16

groovy123124

3

Original post

by isaac123444566

Alr:
A polymer is just a chain of different molecules
There are 2 types: addition polymers, where loads of alkenes are just added up in a row, or condensation polymers, which is a bit harder. To be honest, it's pretty hard to teach without like diagrams or drawings, but if u watch like a science with hazel video or something else on youtube it'll help u visualize it. If u have any questions tho ofc u can ask me

Thank you I reviewed it with her actually, to be honest since we do we draw those squares for diocarboxylic acids and a diol is just somethhing containing 2OH Right? and to form it we just remove the OH's on the sides to for how many h20's?

Reply 17

isaac123444566

18

Original post

by groovy123124

Thank you I reviewed it with her actually, to be honest since we do we draw those squares for diocarboxylic acids and a diol is just somethhing containing 2OH Right? and to form it we just remove the OH's on the sides to for how many h20's?

Usually it's 2 but it depends. If you link on both sides you remove a H from each side of the diol (an alcohol molecule), and an OH from each side of the dicarboxylic acid (a carboxylic acid molecule). And it forms 2 H20 molecules. But if there is only one link between the diol and dicarboxylic acid you remove only one H from the diol and one OH from the dicarboxylic acid - so it only forms 1 H20 molecule

Reply 18

groovy123124

3

Original post

by isaac123444566

Usually it's 2 but it depends. If you link on both sides you remove a H from each side of the diol (an alcohol molecule), and an OH from each side of the dicarboxylic acid (a carboxylic acid molecule). And it forms 2 H20 molecules. But if there is only one link between the diol and dicarboxylic acid you remove only one H from the diol and one OH from the dicarboxylic acid - so it only forms 1 H20 molecule

Thank you question though, what do you recommend do for bit of revison

Reply 19

isaac123444566

18

Original post

by groovy123124

Thank you question though, what do you recommend do for bit of revison

In general or specifically for polymers?
Do the practice questions on like cognito/PMT then skip to the organic chem section on all the chem past papers (there is always one for paper 2) and do those as well to simulate exam conditions, and compare your answer with the mark scheme and add anything u didn't get

Edexcel IGCSE Chemistry (Linear) Paper 2C - 13th June 2025 [Exam Chat]

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