OFFICIAL: GCSE AQA Chemistry - C1- Higher- 19th May 2016 - AM

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jackbarry1999

what did everyone out for the question about potassium carbonate?X

I just said that there was no mass deducted and there was no co2 being produced because the limewater didn't turn cloudy

Reply 61

joeperrin

The boron atom had 2 in the first shell and 3 in the next, the issue with the shell diagram was it had 8 electrons in its inner shell when it should have had only 2

Cba to do the rest

Reply 62

thecomputernerd

yup 20.3
and what did people put for the black stuff? i said carbon monoxide/pariticles????

Reply 63

JKING>)

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I said that it did not reach a high enough temperature to thermally decompose therefore no carbon dioxide was being released which is why the limewater did not turn cloudy.

Reply 64

strongcurrent

Original post by joeperrin

The boron atom had 2 in the first shell and 3 in the next, the issue with the shell diagram was it had 8 electrons in its inner shell when it should have had only 2

Cba to do the rest

There was 3 marks for that though

Reply 65

zeldor711

Original post by jackbarry1999

I just said that there was no mass deducted and there was no co2 being produced because the limewater didn't turn cloudy

Yep probably marks for:
- Saying that there was no mass deducted
- Because no reaction occurred
- And no carbon dioxide released to turn the limewater cloudy

Reply 66

Sami9939

Just struggled with the last question😐

Posted from TSR Mobile

Reply 67

redsoules

I thought it was an OK test but some of the questions were just... annoying to say the least. Mostly ok, but the big mark questions at the end are a killer. Flunked

Reply 68

thecomputernerd

and for cracking:
hot catalyst (aluminium oxide)
and thermal decomposition (high temperature)

and the tick box one was the copper oxide one because metal oxides are always produced

Reply 69

strongcurrent

Original post by zeldor711

Yep probably marks for:
- Saying that there was no mass deducted
- Because no reaction occurred
- And no carbon dioxide released to turn the limewater cloudy

Think I got 2 out of 3!

Reply 70

milolj

What was the answer to that iron question where you had to complete the sentence?

Reply 71

strongcurrent

Original post by thecomputernerd

and for cracking:
hot catalyst (aluminium oxide)
and thermal decomposition (high temperature)

and the tick box one was the copper oxide one because metal oxides are always produced

Didn't it ask for a solid?

Reply 72

thecomputernerd

Last question:
reaction with hydrogen in a presence of a nickel catalyst at 60 degrees, hardened so it is solid at room temperature and not liquid at room temperature, and hydrogenated oils are useful as spreads in cakes, have high melting points,

Reply 73

strongcurrent

Original post by milolj

What was the answer to that iron question where you had to complete the sentence?

Yep, pretty sure I got that wrong xD

Reply 74

thecomputernerd

for the iron one I put 2 literally everywhere, I didn't 4's anywhere

mmmmm

Original post by thecomputernerd

for the iron one I put 2 literally everywhere, I didn't 4's anywhere

If in doubt, put 2;

My motto for chemistry xD

Reply 77

username2428151

I hope you all had a good exam, I am not sure whether mine went well or not, but at least its one exam out of the way! What did everyone put for the question asking how you could improve the experiment with the spirit burner? I said that you could use a copper beaker, as it would allow the heat to transfer faster and more efficiently. The only reason that I put this is because we used a copper cup in calorimetry :s-smilie: