CCEA GCSE exams 2016 *official only CCEA thread*

Original post by gabrielealek

idk its just what i got lol i think i found RFM and then moles to be 0.1 and multiplied by 170 which was the RFM given... i thought the the gradient was getting less steep? idk

What was the substance they asked us to find? Yea i found out i got rate trend wrong, i done as time increaes gas volume increases

Reply 883

RJM1802

OP

6

How does everyone think they've done in the chemistry higher Unit ? Some of the questions were deadly especially that 9 marker!! I think i've got about 88% roughly...

Reply 884

Vickyahunter

Original post by rl15

I can't get question 1😭

I hope that helps!

Reply 885

Vickyahunter

Original post by RJM1802

How does everyone think they've done in the chemistry higher Unit ? Some of the questions were deadly especially that 9 marker!! I think i've got about 88% roughly...

I had no idea what i was writing for the 9 marker. I got the 1st, 3rd and 4th bullet points fine (I think!) but I could not get the ionic equation for the 2nd bullet point! I hope I've done okay. I'm no good at Chemistry but I think it went fine. If i got 88% I would be over the moon!

Reply 886

Original post by gabrielealek

idk its just what i got lol i think i found RFM and then moles to be 0.1 and multiplied by 170 which was the RFM given... i thought the the gradient was getting less steep? idk

I think the ratio was 2:1 so 1 mole was 0.05 of the other and then 0.05x170 =8.5? Not sure

Reply 887

Original post by Okdmd46

I think the ratio was 2:1 so 1 mole was 0.05 of the other and then 0.05x170 =8.5? Not sure

see i used the other mass they gave us of 14.35g and divided by 143.5 which was the RFM of the substance they asked which gave 0.1 moles and i thought the ratio for both was 1:1 as they both had 2 infront of them..

Reply 888

Original post by gabrielealek

see i used the other mass they gave us of 14.35g and divided by 143.5 which was the RFM of the substance they asked which gave 0.1 moles and i thought the ratio for both was 1:1 as they both had 2 infront of them..

Why did u do that? I cant acc mind the masses and reactants they gave us

Reply 889

Original post by Okdmd46

Why did u do that? I cant acc mind the masses and reactants they gave us

im not sure i just used that mass they gave us because it didnt make sense for them to put in there in the second question and not use it lol i probably read it wrong

Reply 890

wizardry9

6

I have 7 exams left and absolutely no motivation for further maths tomorrow... not good!!

Reply 891

Original post by gabrielealek

im not sure i just used that mass they gave us because it didnt make sense for them to put in there in the second question and not use it lol i probably read it wrong

Its funny bc i have asked two people of about equal intelligence and one said 8.5 the other said 17 lol so i duno, but what ever one of us has got it wrong will probs have only lost one mark as they usually apply follow through marking

Reply 892

Original post by Okdmd46

Its funny bc i have asked two people of about equal intelligence and one said 8.5 the other said 17 lol so i duno, but what ever one of us has got it wrong will probs have only lost one mark as they usually apply follow through marking

lol same happened to me when i asked, like you said only 1 mark

Reply 893

Original post by gabrielealek

lol same happened to me when i asked, like you said only 1 mark

What u say for why carbon monoxide is dangerous?

Reply 894

Original post by Okdmd46

What u say for why carbon monoxide is dangerous?

that its toxic and hard to detect as it odourless and colourless + takes the place of oxygen and something else but cant remember

Reply 895

bar73

1

Original post by nmeechan

i literally made up a random equation for boiling of hard water like caco3 + h2o => ca(oh3)2 + co2 + h2 + 02

like i dont even think it balances

What was the question i dont remember doing this and im panicking

Reply 896

Original post by gabrielealek

that its toxic and hard to detect as it odourless and colourless + takes the place of oxygen and something else but cant remember

Would this get me the two marks: carbon monoxide is colourless, odourless and toxic and can kill us by reacting with the red blood cells in our body? I ran outta space to continue lol but I hope that should be fine

Reply 897

Original post by bar73

What was the question i dont remember doing this and im panicking

An equation was not necessary as it didn't state and was qwc, but it's still accepted I'd say I didn't just to play safe, how hardness is removed by boiling: thermal decomposition to form insoluble or a precipitate of limestone

Reply 898

Strudell

Original post by Okdmd46

Its funny bc i have asked two people of about equal intelligence and one said 8.5 the other said 17 so i dunno, but what ever one of us has got it wrong will probs have only lost one mark as they usually apply follow through marking

I thought I got this one right and I got 17, but overall I thought it was a tricky- but nice paper. Definitely separated those who revised from those who didn't. Dreading ad maths tomorrow- gonna hope its alright- only 3 left then!

Reply 899