AQA GCSE Combined Science Paper 2 Higher Tier (8464/C/2H) -13th June 2023 [Exam Chat]

I curved it

(Original post by da1708)Such a good exam!
Forgot to do 3 s.f. because I forgot the numbers after 0 need to be 3, oh well :/ only lost 1 mark that I know of. Got 0.10 but it would've been 0.096 if I understood it agh.
Also, the equilibrium one confused me so much. I said it stays the same because it didn't specify whether the forward/reverse reaction was exothermic or endothermic. So I thought the equilibrium position would stay the same.
Defo got 0.9 for Rf values.
Can't remember what I got for the X value someone will have to remind me of the numbers (if they remember) but I did the inverse of finding the mean.
Loved Q2 Q3 and kinda liked Q5 also.
Where did the oxides of nitrogen come from?


i said the air

did everyone get 0.313 for the last question?
0.9 for the Rf value?
0.31 for the question asking for X?

i got 0.306

(Original post by da1708)Such a good exam!
Forgot to do 3 s.f. because I forgot the numbers after 0 need to be 3, oh well :/ only lost 1 mark that I know of. Got 0.10 but it would've been 0.096 if I understood it agh.
Also, the equilibrium one confused me so much. I said it stays the same because it didn't specify whether the forward/reverse reaction was exothermic or endothermic. So I thought the equilibrium position would stay the same.
Defo got 0.9 for Rf values.
Can't remember what I got for the X value someone will have to remind me of the numbers (if they remember) but I did the inverse of finding the mean.
Loved Q2 Q3 and kinda liked Q5 also.
Where did the oxides of nitrogen come from?


i said the air

Did anyone say that carbon monoxide was hard to detect as it is colourless?

but i thought line of best fit is meant be a straight line with an equal number of x on both sides?

yeah i said that

Can you please help with chromatography 6 marker question(

omg that question stumped me ;-; I put magnesium oxide (?) but I didn't know the reason

It's to do with how attracted they were to the paper

i said the air too!!!! i was so nervous like it felt like it was supposed to be something else

what did people write for the 3 mark on why Rf value changes with chromatography paper?

What. Was this combined trilogy? I didn't see this question. I only saw the question where it said to calculate the RF value.

for the equilibrium one it told us that it was an exothermic reaction so the forward part is exothermic and backwards is endothermic, so the answer was it moves to the left because the reaction GAINED heat.