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OCR Gateway Chemistry C4C5C6 - 13/06/13

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For the dot and cross diagram did you have to transfer sodium to chloride so it got 8 on outershrll? And 2 sodiums to the chloride?

Wasn't is two chlorine atoms?...

Reply 521

BP_Tranquility

Original post by john712

For the dot and cross diagram did you have to transfer sodium to chloride so it got 8 on outershrll? And 2 sodiums to the chloride?

Wasn't the dot and cross diagram on chlorine though? Or is that another question...? :colondollar:

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Reply 522

john712

Original post by BP_Tranquility

Wasn't the dot and cross diagram on chlorine though? Or is that another question...? :colondollar:

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What did you put for the chlorine for and cross model I didn't have a clue I did sodium chloride because literally didnt know what it meant

Reply 523

boldred

Original post by john712

What did you put for the chlorine for and cross model I didn't have a clue I did sodium chloride because literally didnt know what it meant

I did two chlorine molecules in a covalent bond, with two shared electrons I think. If I'm thinking of the same question.

Reply 524

ChloBrown98

Was the option D on the precipitate question the last option? Because I can remember putting the last option.

Reply 525

ChloBrown98

Original post by boldred

I did two chlorine molecules in a covalent bond, with two shared electrons I think. If I'm thinking of the same question.

OMG I think I got this because I put an atom in the middle with four electrons and then on either side I put two atoms that had two dots/ electrons that made eight on the outer shell. :smile:

Reply 526

boldred

I drew that ^
Not sure if that is right though as chemistry is my weakest subject. I found the exam easier than expected but I'm hoping that my high grades in C1/2/3 and coursework will keep my grade on an A.

(edited 10 years ago)

Reply 527

tazza ma razza

easy paper; was like doing a foundation chemistry paper.

i only need 52/85 but reckon i have 79/85.

easier than i expected.

EDIT: yeah as that makes sense; giving me negative ratings just because i did well and expressing my opinion towards the exam. moron

(edited 10 years ago)

Reply 528

john712

How many marks was the dott and cross I lost out on the marks :/

Reply 529

john712

Guys what do you think grade bounadries will be for an A and A* for this and chemistry releastically?

Reply 530

DeadUnicorn

Original post by ChloBrown98

OMG I think I got this because I put an atom in the middle with four electrons and then on either side I put two atoms that had two dots/ electrons that made eight on the outer shell. :smile:

isn't it meant to look like this: http://www.bbc.co.uk/schools/gcsebitesize/science/images/diag_chlorine_2.gif

Reply 531

BrokenS0ulz

Original post by DeadUnicorn

isn't it meant to look like this: http://www.bbc.co.uk/schools/gcsebitesize/science/images/diag_chlorine_2.gif

I did that but inside each one I put Cl^- does that make mine wrong s: ????

Reply 532

ChloBrown98

Original post by DeadUnicorn

isn't it meant to look like this: http://www.bbc.co.uk/schools/gcsebitesize/science/images/diag_chlorine_2.gif

Oh haha I did it completely wrong haha :smile:

Reply 533

DeadUnicorn

Original post by ChloBrown98

Oh haha I did it completely wrong haha :smile:

haha don't worry, it was probably only worth a mark or two :smile:

Reply 534

ChloBrown98

Original post by DeadUnicorn

haha don't worry, it was probably only worth a mark or two :smile:

Thanks

How did you find the exam?

Reply 535

DeadUnicorn

Original post by ChloBrown98

Thanks

How did you find the exam?

Sort of challenging, some questions I think I messed up, but after looking at the ones on here I probably didn't do as bad as I first thought lol :biggrin:

What about you?

Reply 536

ThenAaliyahSaid

I loved this exam.The 6 markers were great and everything I wanted to come up did!! Hopefully it is an A*!

Reply 537

Mutleybm1996

Original post by ChloBrown98

Oh haha I did it completely wrong haha :smile:

You might get a mark or two and other parts of the paper were easier :smile:

!

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Reply 538

Mutleybm1996

Original post by ThenAaliyahSaid

I loved this exam.The 6 markers were great and everything I wanted to come up did!! Hopefully it is an A*!

That compare Hydration and Fermentation one was SOO easy! I thought 'oh god' because i was expecting to have to remember each advantage/disadvantage for Hydration and Fermentation off the top of my head xD

Anyone-Any ideas if physics will be easier or harder than these?

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