OCR gateway chemistry gcse (triple) Watch

person1143
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How did everyone find it? And was it just me who was really confused by the co2 emissions and sea levels graph? What did you all say for that
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via02
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There wasn’t anything that jumped out at me that I had no clue how to do, but I still think it was pretty tricky. For that question I said on the one hand the graph didnt show much of a link as decreasing co2 still raised sea levels, however co2 doesnt decrease till 2005 so this would increase temperature and levels would continue rising even after it decreased?
(Original post by person1143)
How did everyone find it? And was it just me who was really confused by the co2 emissions and sea levels graph? What did you all say for that
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person1143
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Similar to what I said- I just wasn’t sure when writing it, not sure why. Can you remember what you got for the last page of maths questions? I got 4.5 for the gas volume one and something like 0.3986 for the last
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laurawatt
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(Original post by person1143)
Similar to what I said- I just wasn’t sure when writing it, not sure why. Can you remember what you got for the last page of maths questions? I got 4.5 for the gas volume one and something like 0.3986 for the last
I think I got 2.2 for the gas volumes but the similar thing for the last question
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via02
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There wasn’t anything that jumped out at me that I had no clue how to do, but I still think it was pretty tricky. For that question I said on the one hand the graph didnt show much of a link as decreasing co2 still raised sea levels, however co2 doesnt decrease till 2005 so this would increase temperature and levels would continue rising even after it decreased?
(Original post by person1143)
How did everyone find it? And was it just me who was really confused by the co2 emissions and sea levels graph? What did you all say for that
(Original post by person1143)
Similar to what I said- I just wasn’t sure when writing it, not sure why. Can you remember what you got for the last page of maths questions? I got 4.5 for the gas volume one and something like 0.3986 for the last
Yeah I got 0.3986, and acid excess, and something else for gas volume i cant remember now, what was the reaction?
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via02
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Oh now i remember I got 2.2 as well!
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person1143
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Oops I think I multiplied the number of moles by 2 when I shouldn’t have. Hopefully that’s only one mark lost
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laurawatt
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(Original post by person1143)
Oops I think I multiplied the number of moles by 2 when I shouldn’t have. Hopefully that’s only one mark lost
did you find the rest of it okay?
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person1143
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I think so- not sure about the improving experiment question with burning methane and the condensation polymerisation question but other than that I think it went okay
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person1143
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What about you?
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Readthetextbook
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What did all of you write for the condensation polymerisation equation (4 marker)?I believe the 2 you should have picked were ethanol diol and ethanedioic acid and then formed an equation out of them with water as one of the products
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person1143
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That’s what I did but just put polyester + water as the products in the reaction as had no clue what it should be. Then talked about how the hydroxyl and carboxyl groups form water leaving the Ester groups in the polymer
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emmathornton_113
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omg i wrote that but chose the one with 1 and 2 in its name and ethanedioic acid?! And i got 0.05 in the last question that was such a tricky paper jesus im pretty sure i got anything right lol
(Original post by Readthetextbook)
What did all of you write for the condensation polymerisation equation (4 marker)?I believe the 2 you should have picked were ethanol diol and ethanedioic acid and then formed an equation out of them with water as one of the products
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emmathornton_113
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Grade boundAries better be loooowwww after that disgusting paper
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Abiye19
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I got the same answer but wrote it two d.p, does it matter how many figures you rounded it to?
(Original post by via02)
Oh now i remember I got 2.2 as well!
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via02
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don't think so, I did two dp 2.24 or something
(Original post by Abiye19)
I got the same answer but wrote it two d.p, does it matter how many figures you rounded it to?
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K0302
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was it just me who thought that some of the multiple choices could be a couple of the answers?
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Bignibba445
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For some reason I found the multiple choice section harder than the rest of the paper. Other than the additional polymerisation question and the testing for water it was alright
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Bignibba445
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My clown ass forgot the mean titre question said concordant.
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giniw
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#20
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what was kevlar? a poylmer or polyamide?
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