Edexcel chemistry 1

I don't mind if I got a few things wrong, my result can't be much worse than the D I got on resit number 1...

Reply 442

I did all 3 of the previous chemistry 1 papers in the few days leading up to the exam and it was all much the same difficulty. Maybe a bit easier than the first 2, but that's only because Edexcel became a bit more lax after the first year.

Reply 443

amani-puresapphire

16

iloverocknroll

5:1 . You had to work out the empirical formulam :biggrin:

Was this the answer on option C or D? My maths went completely insane I couldn't figure out which one it was :frown:

Reply 444

amani-puresapphire

Was this the answer on option C or D? My maths went completely insane I couldn't figure out which one it was :frown:

It was C. In the question they said Helium-Neon ratio, so the amount of Helium goes first. *coughs*IAlreadyMadeACockUpLikeThatOnAnotherPastPaper*coughs*

Reply 445

amani-puresapphire

16

FallenPetal

It was C. In the question they said Helium-Neon ratio, so the amount of Helium goes first. *coughs*IAlreadyMadeACockUpLikeThatOnAnotherPastPaper*coughs*

Aww damn i was thinking they should have written something like that. I stupidly didnt read the question again, selected C, crossed it out and put D. This paper is worse than i expected.

Reply 446

Btw how did people draw the polymer with 2 monomer repeat units? I didn't know whether to put brackets round it and write n or not

Reply 447

Mally-xo

14

woozeybear

Btw how did people draw the polymer with 2 monomer repeat units? I didn't know whether to put brackets round it and write n or not

I put brackets around it, but I didn't think to do the n

Reply 448

Mally-xo

I put brackets around it, but I didn't think to do the n

Hmm I circled the question number and wrote brackets?by the side as I was meant to go back and look at it but never did hmmmm..someone said to draw a single unit and write 2 in front of it but I don't know lol was confused

Reply 449

woozeybear

Btw how did people draw the polymer with 2 monomer repeat units? I didn't know whether to put brackets round it and write n or not

When they say draw units all you have to do is draw out two identical units joined together and you'll get the marks, provided that the carbons on the end have one unbonded line.

I don't think they'll penalize you for putting brackets round it, but if you really want to know I'd look through one of the 3 old markschemes to see if they penalize it there.

Reply 450

FallenPetal

When they say draw units all you have to do is draw out two identical units joined together and you'll get the marks, provided that the carbons on the end have one unbonded line.

I don't think they'll penalize you for putting brackets round it, but if you really want to know I'd look through one of the 3 old markschemes to see if they penalize it there.

They don't have any questions on it, just one on drawing the polymer hmm..I did what you said usually when it's 50:50 I pick the wrong thing lol :smile:

hopefully though!

Reply 451

amani-puresapphire

Aww damn i was thinking they should have written something like that. I stupidly didnt read the question again, selected C, crossed it out and put D. This paper is worse than i expected.

Multiple choice is a minefield of trick questions. And dw, it's only one mark.

Reply 452

iloverocknroll

Guys wasnt the enthalpy of combustion a positive answer? +760kjmol -1

Reply 453

woozeybear

They don't have any questions on it, just one on drawing the polymer hmm..I did what you said usually when it's 50:50 I pick the wrong thing lol :smile:

hopefully though!

You could always try old spec. then I guess, though they may have changed their minds as to whether it is acceptable or not.

And ye, I am well familiar with the 50/50 sods law in exams :s-smilie:

Reply 454

iloverocknroll

Guys wasnt the enthalpy of combustion a positive answer = 760 Kjmole????

Reply 455

Itachi8

iloverocknroll

Guys wasnt the enthalpy of combustion a positive answer = 760 Kjmole????

yh i got a positive number 700 something but the ppl in here is saying saying they got a negative number

Reply 456