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Edexcel igcse chemistry 2c 15th june 2016 official thread

Hi. Any suggestions of what might come? After the 1C being so hard!!!!
Personally I found 1C pretty easy.

ALL Electrolysis topics including
Definition
What is an electric current?
Electrolyte and non-electrolyte experiments.
Molten (probably only if involving moles, coulombs and Faradays)
Aluminium (cryolite, electrode replacement)
Aqueous (concentrating on NaCl - diaphragm cell), CuSO4 and H2SO4.
Tests for all products and observations in all cells
Ionic half equations

Blast furnace
Raw materials (not carbon)
Know all 5 reactions in detail

Obviously uses of aluminium and iron, and why different methods used for theirextraction.

Crude Oil
Process of Separation in detail
Fraction order, names, uses, properties
Cracking
Polymers (prep, differences,

Four methods of making salts
Anything related to Environment (acid rain, biodegradability, climate change)
Giant Covalent structures - graphite/diamond
Atmosphere qualitative analysis/solubility
Moles, percentage yield calculations
Ionic bonding
Halogens
Ethanol
Bond energy calculations
Haber/contact process
Condensation Polymerisation
I think this paper will literally have a lot calculation:
-Moles
-Electrolysis Mass Calculation
Paper 1C didn't have much of these
Reply 3
I think electrolysis will come up 100%!!!!!😜


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Reply 4
Yea i think the complicated one of alumini oxide
We will probably have to know the ionic equations at each electrode
Oh my what a nightmare!
God bless me!


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Reply 5
I think brine will come up too as it hasnt come in a long in a time. 😎


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Reply 6
Well thats electrolysis


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Reply 7
what are the uses of the 5 main crude oil fractions? :smile:
Reply 8
Original post by Ranadosa
what are the uses of the 5 main crude oil fractions? :smile:

Refinery Gases. Pottery
Gasoline. Cars
Kerosene. Aeroplanes
Diesel. Cars
Fuel oil. Ships
Bitumen. Road
Reply 9
Original post by igcse16
I think brine will come up too as it hasnt come in a long in a time. 😎


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what is brine
Reply 10
Concentrated sodium chloride solution that undergoes electrolysis to produce
Sodium hydroxide
Hydrogen
Chlorine
Original post by dance25
Concentrated sodium chloride solution that undergoes electrolysis to produce
Sodium hydroxide
Hydrogen
Chlorine


You ready for the bloody exam?
am i the only that's still sleepy?
Reply 13
how was it?
Reply 14
That exam was EASY!!! I think i got 55/60 at least. There was only up to 3 markers on the paper no 4 5 or 6 mark questions.
Original post by AVishaa
That exam was EASY!!! I think i got 55/60 at least. There was only up to 3 markers on the paper no 4 5 or 6 mark questions.


Im annoyed, for the periodic table, for basic and acidic oxides, i put sodium for basic amd chlorine for acidic, thinking all metals produce basic oxides, all non metals have acidic. Will i get marks ???
Where can I find the unofficial mark scheme for this paper?
Reply 17
Original post by Castro300
Im annoyed, for the periodic table, for basic and acidic oxides, i put sodium for basic amd chlorine for acidic, thinking all metals produce basic oxides, all non metals have acidic. Will i get marks ???


Why is that wrong? I put magnesium and chlorine. Isnt it the same thing?
Reply 18
Original post by Ali1999
Why is that wrong? I put magnesium and chlorine. Isnt it the same thing?


I don't think chlorine forms a acidic oxide though
The acidic oxide was sulfur

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