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# January Edexcel Chemistry IAL Unit 1 2016 (Thread) watch

1. (Original post by Electrify)
Atom economy was something like 82% if I got it right.
i got the same
2. (Original post by Electrify)
Atom economy was something like 82% if I got it right.
Yep I got that as well. *virtual high five*

I remember it being 82/100 x 100, it was an easy question :P
3. Yo guys please tell me how many peaks you got for oxygen, is my logic fine or not? I am biting my finger nails over here.
4. Guys with the Hess Cycle I put the arrows from bottom to top and got like -3030.5kj/mol. Please tell me that was right.
5. (Original post by Electrify)
Guys with the Hess Cycle I put the arrows from bottom to top and got like -3030.5kj/mol. Please tell me that was right.
it is right
6. Omg lol if I get the hess law question right I am going to be so damn happy. That should be a confirmed A for me then. Holy crap. So do you draw both arrows from bottom to up? Because that's what I did.
7. (Original post by AhmedSiddiqui)
Yep I got that as well. *virtual high five*

I remember it being 82/100 x 100, it was an easy question :P
i got 84/102 x 100 which gave me 82.35
is this wrong?
8. (Original post by YesterdaysDreams)
i got 84/102 x 100 which gave me 82.35
is this wrong?
Aww man I think you did get it wrong. I calculated the ram twice and I remember it being 100.
9. Ok can anybody confirm how does the ums scales work..? I mean to achieve the full 120/120 ums do you need to get full marks from the paper or what?
10. (Original post by AhmedSiddiqui)
Aww man I think you did get it wrong. I calculated the ram twice and I remember it being 100.
do you remember the formula of the hydrocarbon
in the equation
11. (Original post by YesterdaysDreams)
do you remember the formula of the hydrocarbon
in the equation
Yup I remember that as exactly 82.
12. (Original post by AhmedSiddiqui)
Yup I remember that as exactly 82.
what was it? (the equation)
13. pretty sure it was 82%
14. (Original post by Zainat0987)
Ok can anybody confirm how does the ums scales work..? I mean to achieve the full 120/120 ums do you need to get full marks from the paper or what?
No, you don't need to obtain full marks in raw to get a 120/120. "Raw" means how much you get in the paper out of the original number of marks. Often, if the paper is a little hard, you can obtain full UMS with a relatively low raw mark. Scaling is very normal though. Science papers almost always have scaling. You can get a higher percentage than your raw mark with scaling. Hope I helped!
15. (Original post by YesterdaysDreams)
what was it? (the equation)
It was a benzene ring with an OH group, I believe
16. I got the Enthalpy change value around -3000ish.
17. For the atom economy, it was dehydration of Cyclohexanol.

Cyclohexanol --> Cyclohexene + Water
18. The % yield, i got was 73.5% anyone else?
19. (Original post by elhm18)
No, you don't need to obtain full marks in raw to get a 120/120. "Raw" means how much you get in the paper out of the original number of marks. Often, if the paper is a little hard, you can obtain full UMS with a relatively low raw mark. Scaling is very normal though. Science papers almost always have scaling. You can get a higher percentage than your raw mark with scaling. Hope I helped!
Oh so thats how its works.. last may one of my friend got 120ums ...and i thought he got the full raw mark...btw does it goes the same way for maths c12?? And what do you guys predict for the A to be this term..?
20. (Original post by Zainat0987)
Oh so thats how its works.. last may one of my friend got 120ums ...and i thought he got the full raw mark...btw does it goes the same way for maths c12?? And what do you guys predict for the A to be this term..?
Last may was 80/80 for full UMS.

I'm 100% sure, full UMS would be at 80/80 for this paper as well.

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