IGCSE Edexcel Chemistry Paper 1

yoowan

How did y'all find the paper?
I felt that the paper was a little harder than past papers that i've done before 😬

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Reply 1

crazygood

Original post by yoowan

How did y'all find the paper?
I felt that the paper was a little harder than past papers that i've done before 😬

it was mid tbh i couldve done better

Reply 2

ThatGuyJimmehFr

Original post by yoowan

How did y'all find the paper?
I felt that the paper was a little harder than past papers that i've done before 😬

think I got close to 100%, I’m v confident on everything except the Rf chromatography which I for sure got wrong

Reply 3

henry2399

Original post by yoowan

How did y'all find the paper?
I felt that the paper was a little harder than past papers that i've done before 😬

Your ideas are intriguing, and I'm sure I'll enjoy them. I often hear from unhappy people regarding a trait that may be addressed with less emphasis on attention-seeking. I firmly affirm that I made the decision to partake in the activity of reading.

Reply 4

sizorig

Original post by yoowan

How did y'all find the paper?
I felt that the paper was a little harder than past papers that i've done before 😬

yep it was, i want to check the calculation answers with yall:

1) Isotopes calculation: 24.3
2) RF value = 0.615
3) number behind the compound (mole calculations): x = 18 (correct answer = 14) y = 10 or 9 (i cant remember) z = 10 or 9
4) 2755 for Q
5) 0.0085 for the enthalopy change question for magnesium pieces (correct answer = -550kj/mol)

These are all i can remember

(edited 1 year ago)

Reply 5

ceoiku

Original post by sizorig

yep it was, i want to check the calculation answers with yall:
1) Isotopes calculation: 24.3
2) RF value = 0.615
3) number behind the compound (mole calculations): x = 18 y = 10 or 9 (i cant remember) z = 10 or 9
4) 2755 for Q
5) 0.0085 for the enthalopy change question for magnesium pieces
These are all i can remember

I got x = 14 y = 10 z = 9

Reply 6

phoenixche-lai

I think the last question is -550KJ/mol not 0.0085. and I'm pretty sure x was 14 not 18

Reply 7

sizorig

Original post by ceoiku

I got x = 14 y = 10 z = 9

do you remember how you got 14?

Reply 8

BumpyTermite122

Alkanes have carbon and hydrogen and atoms only to find 14 you just balanced ut out once you found z and y so you shouldve gotten 14, and it was -550

Reply 9

sizorig

but you got same answers for others right? Especially asking for the isotopes question as it is worth 4 marks

Reply 10

ceoiku

Original post by sizorig

do you remember how you got 14?

I figured out that it was C9H20 and then wrote out the number of CO2 AND H2O and balanced the equation in terms of oxygen. Because it was like C9H20 + 14O2 --> 9CO2 + 10H2O I think.

Reply 11

GotNoWifi

Original post by phoenixche-lai

I think the last question is -550KJ/mol not 0.0085. and I'm pretty sure x was 14 not 18

Yea same

Reply 12

ceoiku

Original post by sizorig

but you got same answers for others right? Especially asking for the isotopes question as it is worth 4 marks

I got the same for the isotope one.

Reply 13

GotNoWifi

Original post by sizorig

do you remember how you got 14?

u work out y and z first then u use the moles * the number oxygen to find total oxygen on right side. There's no oxygen in the hydrocarbon so simply divide the total number of oxygen on right side by 2

Reply 14

asbingh

The last question was very similar to 2021 paper in june

Reply 15

ThatGuyJimmehFr

Original post by BumpyTermite122

Alkanes have carbon and hydrogen and atoms only to find 14 you just balanced ut out once you found z and y so you shouldve gotten 14, and it was -550

550 is right but I’m almost 100% sure they’ll accept 560 as well because that’s the approximate value they give you

Reply 16

GotNoWifi

Original post by ThatGuyJimmehFr

550 is right but I’m almost 100% sure they’ll accept 560 as well because that’s the approximate value they give you

yh they do it will say 'accept 560' on the mark scheme cuz ive done similar questions before

Reply 17

ad astra

Original post by sizorig

but you got same answers for others right? Especially asking for the isotopes question as it is worth 4 marks

Yeah, I think I got the same as all of your (updated) calculation answers. Rf was probably a little different but I’m sure there’s an acceptable range…

Reply 18

Monkeylolz

Original post by sizorig

yep it was, i want to check the calculation answers with yall:
1) Isotopes calculation: 24.3
2) RF value = 0.615
3) number behind the compound (mole calculations): x = 18 (correct answer = 14) y = 10 or 9 (i cant remember) z = 10 or 9
4) 2755 for Q
5) 0.0085 for the enthalopy change question for magnesium pieces (correct answer = -550kj/mol)
These are all i can remember

what abt the electron questions