IGCSE Edexcel Chemistry Paper 1

Reply 60

Tryingtohelpout

14

Original post by Raniaa123

I got 13.5 would I still get the mark?

No sorry, you will lose a mark if you put 13.5; it is just wrong

Reply 61

DOVEdevil

7

Original post by Ariana1880

Was the caffeine one simple molecular? So for calcium bromide talk abt electrostatic force of attraction like ionic stuff then was caffeine just simple molecular and weak intermolecular forces

exactly what i said !!

Reply 62

vstrangeperson

2

Original post by ad astra

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…

doesn't rf have to be 2sf??

Reply 63

sam_1086

1

Original post by vstrangeperson

doesn't rf have to be 2sf??

no only enthalpy change was stated in question to give as 2 sf

Reply 64

ad astra

4

Original post by vstrangeperson

doesn't rf have to be 2sf??

I'm not sure if the mark scheme will be too strict about it, but I think preferably yes.

Reply 65

GotNoWifi

2

For the concentration graph question I drew the curve with a pencil, would that be fine?

Reply 66

ceoiku

7

Original post by Ariana1880

Was the caffeine one simple molecular? So for calcium bromide talk abt electrostatic force of attraction like ionic stuff then was caffeine just simple molecular and weak intermolecular forces

Yeah you can tell it's a simple molecular simply from the number of atoms in the molecular formula.

Reply 67

RigorousPants3

2

Original post by asbingh

The last question was very similar to 2021 paper in june

That's so true. my school gave our whole year group that paper to practice on a few weeks ago and I only got round to looking at it 20 mins before the exam and i only flicked through the markscheme and was so happy in the exam that so many of the questions and the set up was so similar. Maybe it would also be worth looking at paper 2 in case there are any similarities between those two from that year

Reply 68

ceoiku

7

Original post by RigorousPants3

That's so true. my school gave our whole year group that paper to practice on a few weeks ago and I only got round to looking at it 20 mins before the exam and i only flicked through the markscheme and was so happy in the exam that so many of the questions and the set up was so similar. Maybe it would also be worth looking at paper 2 in case there are any similarities between those two from that year

The aluminium and iron question was also pretty similar to a question from the regional paper from last year that I did the night before. I feel like with chemistry it's just a bunch of repeated questions tbh.

Reply 69

Raniaa123

6

Original post by Tryingtohelpout

No sorry, you will lose a mark if you put 13.5; it is just wrong

but 13.5 is still the same as 14?

Reply 70

Raniaa123

6

Original post by Raniaa123

but 13.5 is still the same as 14?

everyone got 13.5 they just rounded it up? its fine but the others were nine and ten

Reply 71

Tryingtohelpout

14

Original post by Raniaa123

everyone got 13.5 they just rounded it up? its fine but the others were nine and ten

13.5 isn't the answer anyway. The answer was ((9x2)+10)/2 = 14

Reply 72

ad astra

4

Original post by GotNoWifi

For the concentration graph question I drew the curve with a pencil, would that be fine?

Yes, I think that's ok.

Reply 73

harry_maguire4

1

Original post by ymoose

cant lie found it alr tbh
i forgot the minus sign in last question because it was exothermic so I put plus oops
oh yh I put zinc for the metal S in the multiple choice but it was R because zinc doesn't react with water
other than that I think it was good

Bro pretty sure zinc was S cuz it does react with water

Reply 74

acelils

4

what did everyone get for the question with what the unknown substance forms with Florine - is it supposed to bE ZF2 or MGF2

Reply 75

eshaani

Original post by ymoose

cant lie found it alr tbh
i forgot the minus sign in last question because it was exothermic so I put plus oops
oh yh I put zinc for the metal S in the multiple choice but it was R because zinc doesn't react with water
other than that I think it was good

me too!! I've been trying to find someone w this mistake UGH I'm sk mad but yeah everything else was okay

Reply 76

eilariaaa

2

Original post by Ariana1880

Was the caffeine one simple molecular? So for calcium bromide talk abt electrostatic force of attraction like ionic stuff then was caffeine just simple molecular and weak intermolecular forces

that's the same thing i said but im not sure if it's right tho

Reply 77

ad astra

4

Original post by acelils

what did everyone get for the question with what the unknown substance forms with Florine - is it supposed to bE ZF2 or MGF2

I was thinking about this a lot too. Ultimately, I ended up going for ZF2 because I thought the premise of the question was to gently guide you towards the conclusion it’s magnesium at the end, but I don’t see any reason why you should be marked incorrect for actually recognizing the metal earlier…