OCR Chemistry AS Depth Thursday 23rd 2019 Unofficial Markscheme

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TSR George
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#1
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#1
Upload all your thoughts and answers here for the as chemistry depth paper from today. What did you lot think of it?
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ben.ashmore
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#2
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#2
What did you get for X in SrCl2 x H2O? I got 5.8 when not rounding any other calcs but 5.9 when rounding. I went with 5.8 in the end. Overall I felt like it was a good paper, the 6 markers were nice too
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Ebonyw02xox
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#3
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#3
How many grams of hexan-1-ol did you all get? And what did you put for the fertilisation question about mgNo3?
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ben.ashmore
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#4
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#4
Yeah at first I rounded 5.9 to 6 but then saw the question asked for 2sf so I assumed you were supposed to get a decimal
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gracehwd
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#5
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#5
(Original post by ben.ashmore)
Yeah at first I rounded 5.9 to 6 but then saw the question asked for 2sf so I assumed you were supposed to get a decimal
Uhh anyone else get 11?
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danyy2121
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#6
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#6
I got 13.43 but forgot to divide it by 2 because of h2o
(Original post by gracehwd)
Uhh anyone else get 11?
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bzz567
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#7
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#7
i have the test at 2 helppp
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gracehwd
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#8
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#8
Why did you divide by 2?
Don’t you just divide the mass by 18 then by the smallest one to get the ratio
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james161717886
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#9
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#9
Understandable mistake
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Dfffggv
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#10
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#10
What topics did you think you did well? And which did you struggle with?
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TheV1llain27
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#11
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#11
Hi Guys

Can u tell me which topics came up in the paper? Many Thanks
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Pav2001
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#12
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#12
(Original post by Ebonyw02xox)
How many grams of hexan-1-ol did you all get? And what did you put for the fertilisation question about mgNo3?
8.16
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james161717886
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#13
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#13
What did u get for the first question
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dylan_sian
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#14
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#14
i got that too

(Original post by Pav2001)
8.16
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dylan_sian
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#15
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#15
(Original post by james161717886)
What did u get for the first question
the definition of relative atomic mass?
or the abundance one forgot which was first
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thekidwhogames
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#16
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#16
Alcohol 8.16
Separating funnel and distill
Standard solution
60cm3
35.8cm2 or somerhing
86 for isotope
5. 8 for x
Mass of zinc like 26g I can't remember just plug formula this is the standard solution q
Nickel catalyst
Decolorises from orange to colorless
Major is when the H goes TO c connected to most h
Metallic bonding explanation
Observation is lower pH and takes more time to get the fizzing and metal dissolves (less vigorous)
2
itskxmil
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#17
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#17
All of them

(Original post by saras2710)
Hi Guys

Can u tell me which topics came up in the paper? Many Thanks
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danyy2121
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#18
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#18
I got 86.1 but I doubt it’s right but I got it right when I put in the formula . But I used trial and error as my last minute resort 😂😂😂😂
(Original post by dylan_sian)
the definition of relative atomic mass?
or the abundance one forgot which was first
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Esmesgirl
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#19
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#19
I had no idea. Not something I revised, so I couldn't answer it. I ran out of time to look at it properly to guess.
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Esmesgirl
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#20
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#20
Wasn't it about definition of an isotope? There was the isotope abundance question on Sr as well.
(Original post by dylan_sian)
the definition of relative atomic mass?
or the abundance one forgot which was first
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