Edexcel GCSE Combined Science: Chemistry Paper 2 - Discussion Thread

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Loci Pi
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#1
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#1
How did everyone find it?

Did anyone get:
20% for the % of Oxygen
35 for the atomic mass of the element
2. 8. 7 for the electron configuration
0.1 / 24 = 0.004167 for the moles question

They're probably wrong, I'm terrible at Chemistry lol.
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R5R
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#2
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I got them all except 35 I got something smaller I think
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R5R
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#3
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(Original post by R5R)
I got them all except 35 I got something smaller I think
Actually probably got 35
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Loci Pi
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(Original post by R5R)
I got them all except 35 I got something smaller I think
I might have not put 35 for that question. I just remember the number 35 from somewhere in the paper.

At least I wasn't the only one to get those answers
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Tenez13
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omg i think i did 0.1/24 and wrote 0.04167
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Tenez13
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will i still get marks or not !!! what did you put for the experiment of charged particles?
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R5R
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Did you get 470 for the bond enemy energies question by the back
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Loci Pi
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(Original post by Tenez13)
omg i think i did 0.1/24 and wrote 0.04167
It was only worth 1 mark. If you wrote 0.1/24 as a fraction as part of your working, you might get the mark (because it will look as though you expressed the answer as a fraction in the working), but if you didn't then you probably won't, sorry. It was only worth one mark though so it wasn't very important.
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Loci Pi
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(Original post by R5R)
Did you get 470 for the bond enemy energies question by the back
What question??? Did I miss one out?
Is that for Edexcel Combined Science?
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Tenez13
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(Original post by Loci Pi)
It was only worth 1 mark. If you wrote 0.1/24 as a fraction as part of your working, you might get the mark (because it will look as though you expressed the answer as a fraction in the working), but if you didn't then you probably won't, sorry. It was only worth one mark though so it wasn't very important.
i did put it in my working. And what did you get for the experiment of charged particles?
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R5R
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Probably triple
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Loci Pi
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Did anyone put that the blue litmus paper turns red in the solution because when the halide is dissolved in hydrogen solution it becomes acidic?
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Loci Pi
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#13
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(Original post by Tenez13)
i did put it in my working. And what did you get for the experiment of charged particles?
We hadn't learnt it in class so I made a guess about electrodes and putting an electric current through it and measuring the current with an ammeter.
My answer was pure waffle and I had no idea :lol:
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R5R
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(Original post by Loci Pi)
Did anyone put that the blue litmus paper turns red in the solution because when the halide is dissolved in hydrogen solution it becomes acidic?
Yeah I said the HCL is acidic so it turns red
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Tenez13
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(Original post by Loci Pi)
We hadn't learnt it in class so I made a guess about electrodes and putting an electric current through it and measuring the current with an ammeter.
My answer was pure waffle and I had no idea :lol:
yeh i put aboout electrolysis
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meeran123
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(Original post by Loci Pi)
How did everyone find it?

Did anyone get:
20% for the % of Oxygen
35 for the atomic mass of the element
2. 8. 7 for the electron configuration
0.1 / 24 = 0.004167 for the moles question

They're probably wrong, I'm terrible at Chemistry lol.
i got the same!
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Loci Pi
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(Original post by R5R)
Yeah I said the HCL is acidic so it turns red
Yay that's another 2 marks
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Tenez13
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#18
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(Original post by Loci Pi)
Did anyone put that the blue litmus paper turns red in the solution because when the halide is dissolved in hydrogen solution it becomes acidic?
Yes, when hydrogen chloride gas dissolves in water, it forms hydrochloric acid which is acidic.
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Loci Pi
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#19
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What did you put for the 'Why do you need to wait for the test tube to cool down before measuring the amount of Oxygen?' question. The multiple choice.
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Tenez13
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#20
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(Original post by Loci Pi)
Yay that's another 2 marks
swear it was 1 mark?
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