[Mrkingpenguin]

I think I understood/got most of the questions and found this exam generally a lot easier than the biology exam.

Although for the "Why might the miller/urey evidence for how ammino acids form be weak?"

What did everyone put? I found that hard and just said about other theories apart from lightening causing it and that it may not be a constant lightening strike as in the experiment.

[tingirl]

(Original post by Shad-A)
OMG! I simply 'killed it' To easy, (for me atleast) but eventhough for me the experiment about Urey and Miller asking about the amino acids was a struggle. This exam was a lot easier than Biology, with the Biology exam I can still feel the penetration I got there -.-

That's what I thought at first! But the more I think about it, the worse I think I've done!

What did you write about the density of nitrogen in dry air?

[Saraxo]

(Original post by Shad-A)
I did get that right, although I think that the question asked to give 2 reasons?

yeah i couldnt think of the other reason, what did you write?


This was posted from The Student Room's iPhone/iPad App

[IIncognito]

(Original post by Shad-A)
OMG! I simply 'killed it' To easy, (for me atleast) but eventhough for me the experiment about Urey and Miller asking about the amino acids was a struggle. This exam was a lot easier than Biology, with the Biology exam I can still feel the penetration I got there -.-

Out of the population and what I have read on how people found it, an examiner will most likely not count you because you're an anomalous result.

The Amino Acid question was moderate difficulty and the main answer was given away in the question itself bringing it's difficulty down even further. You're saying biology was harder than chemistry aside from a single question?

[dannyoboy007]

(Original post by noshii1)
i think i read that question wrong :/
i thought it asked something else, i wrote 50 % ethanol
this was my first gcse and im in year 9 so it was hard :'(
my cpg was an A i will be very happy with B
i hope they lower the grade boundaries!
does anyone know when you get your result??

Year 9 seems very early for GCSE's, i thought year 10 was early aswell...

Results will be delivered sometime in August by post - No exact dates i don't think.

[Illumin8]

(Original post by techno836)
no it was c2H4 and summat else i cant remember how many carbons in naptha sorry but you dont have ethene in yours ... thats butene and hexane

but i think its c2h4 and c4h10 .. infact im sure it is now :L

Oh yeah of course, I did put that in the exam. I just put down ethene first and then saw how many Cs and Hs are left to make Naptha. Yes, c2h4 and c4h10 are correct. One is an alkene and one is an alkane.

[IIncognito]

(Original post by Mrkingpenguin)
I think I understood/got most of the questions and found this exam generally a lot easier than the biology exam.

Although for the "Why might the miller/urey evidence for how ammino acids form be weak?"

What did everyone put? I found that hard and just said about other theories apart from lightening causing it and that it may not be a constant lightening strike as in the experiment.

MARK 1: There is not enough evidence gathered/collected to use for every aspect of the scenario (of the atmosphere).

MARK 2: The scale of the experiment is very small compared to a much larger ratio, with life and other substances present.

[Illumin8]

What did u guys put for "What can be seen when yeast is breaking down sugar"? I put change in colour

[Saraxo]

biology was way easier than tgis exam. i got a* in biology probably not even a D in this exam...


This was posted from The Student Room's iPhone/iPad App

[Dora97]

Not going to say it was easy, because there were at least 2 questions I had no clue how to answer and I'm pretty sure I made a few silly mistakes because I got 450kg for the graph when everyone else said they got 150kg... but it was SO much better than Tuesday's B1 exam!

[Saraxo]

(Original post by IIncognito)
MARK 1: There is not enough evidence gathered/collected to use for every aspect of the scenario (of the atmosphere).

MARK 2: The scale of the experiment is very small compared to a much larger ratio, with life and other substances present.

only got one mark there then


This was posted from The Student Room's iPhone/iPad App

[ThatPerson]

(Original post by e16)
Yeah it was alright I guess but I think I've lost a mark on the graph question, hate those And the titanium one got me all confused for a bit How was it recycled?

The Chlorine was recycled It was initially reacted with Titanium to produce Titanium Chloride(I'm going to call it TiCl to stop me writing down everytime). Then TiCl was reacted with Magnesium to displace the Chlorine. This Chlorine then went back to the beginning to react with more titanium.

[ThatPerson]

(Original post by DON5)
Yeast is a bacteria, and when yeast reacts with sugar, bubbles or froth is seen because carbon dioxide is made.

I wrote gas bubbles were produced. Will I get a mark?

[tingirl]

(Original post by Alix23)
Yeast is a fungus

Do you think we needed to write that in our answer?

[Saraxo]

(Original post by ThatPerson)
The Chlorine was recycled It was initially reacted with Titanium to produce Titanium Chloride(I'm going to call it TiCl to stop me writing down everytime). Then TiCl was reacted with Magnesium to displace the Chlorine. This Chlorine then went back to the beginning to react with more titanium.

im so dumb. i put magnesium was recycled


This was posted from The Student Room's iPhone/iPad App

[Illumin8]

(Original post by ThatPerson)
The Chlorine was recycled It was initially reacted with Titanium to produce Titanium Chloride(I'm going to call it TiCl to stop me writing down everytime). Then TiCl was reacted with Magnesium to displace the Chlorine. This Chlorine then went back to the beginning to react with more titanium.

I put magnesium was recycled. It was put back into Reactor to displace Titanium Chloride.

[IIncognito]

I'm leaving now, I don't have time to give answers for all the questions, for the one about the graph:

Look at the x axis, find 300. Go up, do not stop at the first curve/line, this is not what you are looking for. Continue to the one above it, go to the left. 750 - 300 = 450.

If you put 450 it was correct.

[Dora97]

(Original post by Illumin8)
What did u guys put for "What can be seen when yeast is breaking down sugar"? I put change in colour

I put that you could see bubbles of carbon dioxide in the sugar solution, but I guessed that one :/

[ThatPerson]

(Original post by Illumin8)
I put magnesium was recycled. It was put back into Reactor to displace Titanium Chloride.

I'm not sure about that, but I'm pretty confident that Chlorine was also recycled.

[Saraxo]

(Original post by IIncognito)
I'm leaving now, I don't have time to give answers for all the questions, for the one about the graph:

Look at the x axis, find 300. Go up, do not stop at the first curve/line, this is not what you are looking for. Continue to the one above it, go to the left. 750 - 300 = 450.

If you put 450 it was correct.

how do you know all the answers, are you a teacher loll


This was posted from The Student Room's iPhone/iPad App