IGCSE Chemistry!!!

[ViRuS2000]

Hey guys i have chemistry exam Wednesday [23rd May, 2012]
is there any1 who did the exam before? Can U help me out?
I really need help with my chemistry...

 

[Mohamed Ghareeb]

http://www.xtremepapers.com/community/attachments/chemistry-paper-6-docx.10343/
You should know the basic lab apparatus.
You should know how to read from the burette/pippette/measuring cylinder images given
You should know to draw a graph
You should know the identification of ions (test to check the presense of iron(ii) etc)
You should know Titration
You should know Chomatography
You should know Crystallization
You should know difference between distillation and fractional distillation
You should know the basic filtration methods
You should know effect of heat and concentration on reaction
You should solve pastpapers

 

[ViRuS2000]

Hey did u do the exam before?
U seem to know alot abt the exam

 

[Mohamed Ghareeb]

Hey did u do the exam before?
U seem to know alot abt the exam

I solved pastpapers and they have many common Q almost all of them

 

[ViRuS2000]

I solved pastpapers and they have many common Q almost all of them

Very Kool
Thank You So Much...
Today Is My Exam!
Gudluck T o Anyone Writing Theirs Today Too!!!

 

[EpicLol]

http://www.xtremepapers.com/community/attachments/chemistry-paper-6-docx.10343/
You should know the basic lab apparatus.
You should know how to read from the burette/pippette/measuring cylinder images given
You should know to draw a graph
You should know the identification of ions (test to check the presense of iron(ii) etc)
You should know Titration
You should know Chomatography
You should know Crystallization
You should know difference between distillation and fractional distillation
You should know the basic filtration methods
You should know effect of heat and concentration on reaction
You should solve pastpapers

Do u have any tips for paper 3 chem? Im bad at chem

 

[M.Talha]

Chemistry problem:In 0620/31/ON/08 Question 6 b (ii), I cannot get why there is no reaction when KOH decompose in heat? And why KNO3 - / > KO + NO2 + O2 (which is normal decomposition of nitrates)? Why KNO3 - > KNO2 + O2.

 

[EpicLol]

Chemistry problem:In 0620/31/ON/08 Question 6 b (ii), I cannot get why there is no reaction when KOH decompose in heat? And why KNO3 - / > KO + NO2 + O2 (which is normal decomposition of nitrates)? Why KNO3 - > KNO2 + O2.

Couldu provide the link to the question paper plz?
Thx

 

[Gamedos]

Chemistry problem:In 0620/31/ON/08 Question 6 b (ii), I cannot get why there is no reaction when KOH decompose in heat? And why KNO3 - / > KO + NO2 + O2 (which is normal decomposition of nitrates)? Why KNO3 - > KNO2 + O2.

potassium and sodium hydroxides decompose in a different way than other hydroxides

 

[Mr.Physics]

Methane is natural gas, propane is propagas and butane is calor gas. As the percentage of carbon in the molecule increases, how does it affect the sootines of their flames??