Official AQA GCSE Chemistry Unit 2 24th Janurary NEW SPEC Watch

Poll: What do you think the 6 marker will be?
Electrolysis of (metal) (14)
22.95%
Gas chromotography and Mass spectrometry (19)
31.15%
Atomic structure and bonding (5)
8.2%
Polymers (10)
16.39%
Explaining the process of a experiment (8)
13.11%
Other (please leave your suggestion) (5)
8.2%
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sykik
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#161
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#161
OMG i knew what i was doing but i just misread the question, How many marks was it and will i get any marks for the yield one
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MajorRisk
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#162
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#162
(Original post by sykik)
i got 18.something
Oh, sounds like you've made an error...what did you get for the Mr of 2Fe and 2FeCl3. 2 marks are hardly costly anyway
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sykik
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#163
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#163
If i put 18.something in the yield one will i get the marks or is it for putting the right answer in
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MajorRisk
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#164
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#164
(Original post by sykik)
OMG i knew what i was doing but i just misread the question, How many marks was it and will i get any marks for the yield one
Yeah, you'll get a few mark(s) for the way you calculated the yield anyway, even if your answer to the above question was wrong...:rolleyes:
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sykik
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#165
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#165
(Original post by MajorRisk)
Yeah, you'll get a few mark(s) for the way you calculated the yield anyway, even if your answer to the above question was wrong...:rolleyes:
Thnx for the info BTW what question did you find hard
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sykik
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#166
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#166
BTW did u notice that there was an anomaly in the working out mean question
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ali_d123
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#167
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#167
(Original post by sykik)
BTW did u notice that there was an anomaly in the working out mean question
yes, you do not count that when working out the mean
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grammar12
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#168
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#168
(Original post by sykik)
BTW did u notice that there was an anomaly in the working out mean question
yeh, i wrote 35 for the answer but i put a side note saying there was an anomaly so that may be chosen to be removed :/
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sykik
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#169
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#169
Yessss most of the people in my school used the anomaly , i hope the grade boundaries are low due to these simple mistakes
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sykik
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#170
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#170
For the equation you had to fill in about copper oxide or something, could you put word equation or had to put the formula
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sykik
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#171
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#171
Ali and grammar12 did u mess up on any question?
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sykik
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#172
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#172
Ali and grammar12 did u mess up on any question?
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MajorRisk
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#173
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#173
(Original post by sykik)
BTW did u notice that there was an anomaly in the working out mean question
Yeah, the outlier was 42 or something like that. The answer was around 35 i think, can't really remember. I thought the hardest question was the kelp question, I put that it was also an economical issue and was also up to opinion...don't know if the first reason counted...

Also for the 1 mark equation with Sulfuric acid I put SO4 haha not H2SO4 - don't know why I missed that, as water is always produced with Metal oxide and acid, haha brain freeze!
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aroraair
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#174
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#174
for the question- 'why did they heat the >>>>>> at stage one' I wrote in order the evaporate the water.
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MajorRisk
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#175
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#175
(Original post by aroraair)
for the question- 'why did they heat the >>>>>> at stage one' I wrote in order the evaporate the water.
I put that first, then crossed it out, as I remembered copper wasn't very reactive, so needs to be heated to speed up reaction...
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sykik
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#176
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#176
For heating could you write about thermal decomposition as i didn't have a clue what to write
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MajorRisk
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#177
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#177
(Original post by sykik)
For heating could you write about thermal decomposition as i didn't have a clue what to write
I think you might be right...I can't remember exactly but I think it was a reversible reaction that was exothermic one way, so the answer was endothermic the other way...(Thermal Decomposition is an endothermic reaction)
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sykik
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#178
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#178
OMG if that's right then it would be the biggest guess ever
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sykik
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#179
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#179
BTW for the scientist one could you write that scientist can't accurately predict when the coal will run out and that new ores for copper are being found so i's unpredictable and also that whether people want eye sore scenery or less polluted environment it depends on them
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Davothebigafro
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#180
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#180
So erm... physics next eh?
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