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AQA GCSE Chemistry Paper 2 Higher Tier Triple (8462 2H) - 11th June 2024 [Exam Chat]


AQA GCSE Chemistry Paper 2 Higher Tier Triple (8462 2H) - Tuesday 11th June 2024 [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.

General Information
Date/Time: Tuesday 11th June / AM
Length: 1h 45m

Resources
AQA (Chemistry)
(edited 1 month ago)
yup
Original post by maksmaksii
yup

How are you feeling about this paper
Good luck everyone! We’ve got this. Any chemistry fans?
After that p1 this has to carry me
Original post by alizaabdulkadir
After that p1 this has to carry me


real. hope the grade boundaries aren't so high this year 🙏🙏
Reply 6
does anyone have any predictions for the paper this year? required practicals etc.
can anyone please explain condensation polymerisation to me? i wasnt in for that lesson and the diagrams on youtube just seem to confuse me
Original post by Sobbingsoobin
can anyone please explain condensation polymerisation to me? i wasnt in for that lesson and the diagrams on youtube just seem to confuse me

condensation polymeristion is the process by which monomers join to form polymer strands by also producing a small molecule which is generally water (unlikely something else will come up for GCSE)

The monomers undergoing condensation polymerisation generally either both end in O-H- ions as in…
H-O-[]-O-H
Or one of the above reacts with anything else that would form water…
H-[]-H etc

*[] being the rest of the monomer

When they react, these molecules at the end break off to form water (H2O) and the remaining molecule, similar to normal polymerisation, has two free bonds []— that bond to the rest of the monomers

The monomer is drawn by merging together the monomers once the small molecules have been removed
—()—[]—

Some diagrams may try and trip you up with other bonds being drawn but it is only ever -O-H or -H that break off

As H2O has 2 Hydrogen and 1 Oxygen molecules, if we have two monomers ending with O-H-
…as in H-O-[]-O-H H-O-[]-O-H
…then O-H- breaks off of one monomer and only -H breaks off the other

The formulae are drawn as
n[monomer] + n[monomer] ——> [monomer]n + 2n H2O

lmk if u didn’t understand or if i didn’t mention anything
Original post by blwuerry
condensation polymeristion is the process by which monomers join to form polymer strands by also producing a small molecule which is generally water (unlikely something else will come up for GCSE)
The monomers undergoing condensation polymerisation generally either both end in O-H- ions as in…
H-O-[]-O-H
Or one of the above reacts with anything else that would form water…
H-[]-H etc
*[] being the rest of the monomer
When they react, these molecules at the end break off to form water (H2O) and the remaining molecule, similar to normal polymerisation, has two free bonds []— that bond to the rest of the monomers
The monomer is drawn by merging together the monomers once the small molecules have been removed
—()—[]—
Some diagrams may try and trip you up with other bonds being drawn but it is only ever -O-H or -H that break off
As H2O has 2 Hydrogen and 1 Oxygen molecules, if we have two monomers ending with O-H-
…as in H-O-[]-O-H H-O-[]-O-H
…then O-H- breaks off of one monomer and only -H breaks off the other
The formulae are drawn as
n[monomer] + n[monomer] ——> [monomer]n + 2n H2O
lmk if u didn’t understand or if i didn’t mention anything

ohhh okay this makes alot of sense! thank you! so would we have to memorise that structure of a polyester? i hope not lol
Original post by Sobbingsoobin
ohhh okay this makes alot of sense! thank you! so would we have to memorise that structure of a polyester? i hope not lol
We probably need to be able to recognise it and we might be asked to draw it but probably given the two monomers so that shouldnt be too hard
Original post by blwuerry
We probably need to be able to recognise it and we might be asked to draw it but probably given the two monomers so that shouldnt be too hard

okay then thats okay, thank you!
Does anyone have an easy way of remembering the differences between alkenes and alkanes? Or which colours the elements produce in flame tests?

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