AQA Chem Unit 1 May 22nd 2015 OFFICIAL THREAD

Reply 1380

AJeeeee

6

Original post by 12345678zzz

ermm I put plastics........ :nooo:

Lol i put Nylon for the bants.

Reply 1381

StarStruckShield

1

Original post by AJeeeee

There is an easy way of doing it! You see terelium is in period 5, it is in p block, and it is 4th one to left, So configuration should end with 5P⁴

Thats much easier than the way i tried to do it! I tried finding structure for Krypton then going up to Te. Think i confused myself. :s-smilie:

Reply 1382

Cadherin

14

Original post by Anon_98

;((((( Yeah same tbh.

Your answers sound good- I'm sure you've done better than you think!! Dont worry! :smile:

I got silicion, argon, triganol planar, I got 627 too, 6 for the integer, 4.2/ something for that question, ionic yep, also drew a cycloalkane but mine looked so incredibly wrong, ughhhh I think I labelled it the other way- I got 3,5-dichloro-3,5-dimethylhexane.

How many marks is it for an A on average...does anyone know?

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Usually 56/70 for an A (80%) although can vary a little bit. I think this one will be about 54-55/70 for an A and 68/70 for full UMS.

Reply 1383

PS4

5

2,4 -dichloro-2,4-dimethylhexane was the answer

3,5 or whatever is wrong because IUPAC rules state that the sum of the number should be the lowest possible.

Reply 1384

AJeeeee

6

Original post by StarStruckShield

Thats much easier than the way i tried to do it! I tried finding structure for Krypton then going up to Te. Think i confused myself. :s-smilie:

Its fine, it was a 1 marker anyways

Reply 1385

thehollowcrown

12

Original post by Anon_98

;((((( Yeah same tbh.

Your answers sound good- I'm sure you've done better than you think!! Dont worry! :smile:

I got silicion, argon, triganol planar, I got 627 too, 6 for the integer, 4.2/ something for that question, ionic yep, also drew a cycloalkane but mine looked so incredibly wrong, ughhhh I think I labelled it the other way- I got 3,5-dichloro-3,5-dimethylhexane.

How many marks is it for an A on average...does anyone know?

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56ish I think

Reply 1386

Roszz

Original post by GabrielSmith1998

I said Mg3N2 but friends showed me I was wrong, because the N only had a -1 charge not -3.

Samee

(((

Reply 1387

Lucasium

15

What was the m/z ration worded question?

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Reply 1388

StarStruckShield

1

How did you explain why silicon had highest melting point?

Reply 1389

Anon_98

19

Original post by Boundless_x

Not modest, just honest :biggrin:

Hahahahha, hmmm.. :smile:

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Reply 1390

Mvpmb

13

For Q2, what was the equation for the detector, the explenation for isotopes and the smallest peak,= and athe atomicc raddii ****

Reply 1391

12345678zzz

2

Original post by AJeeeee

Lol i put Nylon for the bants.

sounds practical :flower2:

Reply 1392

darkbluepp

1

Original post by 12345678zzz

ermm I put plastics........ :nooo:

I put
( ´∀｀)σ Poly(propene) --- making plastics.

Reply 1393

animefan

9

Did anyone draw cyclopropane when it asked for functional group of propene

Reply 1394

Anon_98

19

Original post by 12345678zzz

thought only compounds with 2 lone pairs can be called bent/v-shape... I put a really stupid answer :frown:

literally going to cry now :cry2:

Me too. ;(((((((((( I thought exactly the same so I stupidly put triganol planar.

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Reply 1395

6eor9ie

For the IUPAC naming question, does the order that you wrote the methyl and chloro parts matter? I put 2,4 dimethyl 2,4 dichloro hexane, instead of putting chloro first??

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Reply 1396

darkbluepp

1

Original post by StarStruckShield

How did you explain why silicon had highest melting point?

Silicon atoms bond covalently with each other to form a giant covalent structure.
A lot of energy is required to break these strong covalent bonds so the melting point is high.