how to prepare for chem atp

[bogus]

ya so what should we study?

 

[Syed Zafar]

Learn Oft-Repeated Questions

 

[ahmedyarh]

-Tests for ions.
-Salt preperation.
-Measuring instruments.
-Moles with Titration.
-Practice graphs.

 

[sugarg]

good luck to all for chemistry

 

[sugarg]

plxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx chemistry ka guess paper b koi ha to btao?????????????????????????????/

 

[SalmanPakRocks]

Just do the past papers.

 

[rabiafarooq101]

here is what u should do do the identification of ions courtesy of xps
Tests for aqueous cations:

CationEffect of aqueous sodium hydroxideEffect of aqueous ammonia
Aluminium (Al3+) White ppt., soluble in excess giving a
colourless solution White ppt., insoluble in excess
Ammonium (NH4+) Ammonia produced on warming –
Calcium (Ca2+) White ppt., insoluble in excess No ppt. or very slight white ppt.
Copper (Cu2+) Light blue ppt., insoluble in excess Light blue ppt., soluble in excess,
giving a dark blue solution
Iron(II) (Fe2+) Green ppt., insoluble in excess Green ppt., insoluble in excess
Iron(III) (Fe3+) Red-brown ppt., insoluble in excess Red-brown ppt., insoluble in excess
Zinc (Zn2+) White ppt., soluble in excess,
giving a colourless solution White ppt., soluble in excess,
giving a colourless solution
Tests for Anions:

AnionTestResult
Carbonate (CO32-) Add dilute acid Effervescence,
carbon dioxide produced
Chloride (Cl-)
(in solution) Acidify with dilute nitric acid, then add
aqueous silver nitrate White ppt.
Iodide (I-)
(in solution) Acidify with dilute nitric acid, then add
aqueous silver nitrate Yellow ppt.
Nitrate (NO3-)
(in solution) Add aqueous sodium hydroxide, then
aluminium foil; warm carefully Ammonia produced
Sulfate (SO42-) Acidify, then add aqueous barium nitrate White ppt.




Tests for Gases:

GasFormulaTests
Ammonia NH3 Turns damp red litmus paper blue
Carbon dioxide CO2 Turns limewater milky
Oxygen O2 Relights a glowing splint
Hydrogen H2 ‘Pops’ with a lighted splint
Chlorine Cl2 Bleaches damp litmus paper
Nitrogen dioxide NO2 Turns damp blue litmus paper red
Sulfur dioxide SO2 Turns acidified aqueous potassium dichromate(VI) from orange to green

colour of salts






SaltFormulaSolidIn Solution
Hydrated copper sulfate CuSO4.5H2O Blue crystals Blue
Anhydrous copper sulfate CuSO4 White powder Blue
Copper nitrate Cu(NO3)2 Blue crystals Blue
Copper chloride CuCl2 Green Green
Copper carbonate CuCO3 Green Insoluble
Copper oxide CuO Black Insoluble
Iron(II) salts E.g.: FeSO4, Fe(NO3)2 Pale green crystals Pale green
Iron(III) salts E.g.: Fe(NO3)3 Reddish brown Reddish brown

 

[rabiafarooq101]

formula of moles
Moles=mass in grams/AR or MR
Mole of gases=volume in dm3/24
Molarity=moles/vol in dm3

 

[GrunT]

should I go through acid and bases too for ATP preparation ?

 

[rabiafarooq101]

should I go through acid and bases too for ATP preparation ?

yes

 

[rabiafarooq101]

do these topics from xps revision
http://www.xtremepapers.com/revision/gcse/chemistry/lab_skills_and_separating_methods.php
http://www.xtremepapers.com/revision/gcse/chemistry/atomic_structure_and_periodic_table.php
http://www.xtremepapers.com/revision/gcse/chemistry/stoichiometry.php
http://www.xtremepapers.com/revision/gcse/chemistry/rates_of_reaction.php
http://www.xtremepapers.com/revision/gcse/chemistry/acids_bases_and_salts.php

 

[Muhammad Zain Qasmi]

We arent provided with a periodic table in ATP right and the flame colour test(s) isnt in our syllabus
RIGHT ?

 

[rabiafarooq101]

yes

We arent provided with a periodic table in ATP right and the flame colour test(s) isnt in our syllabus
RIGHT ?

 

[manicooljay]

is organic important???

 

[rabiafarooq101]

is organic important???

do study it

 

[twelveoclock]

Can I have the papers and marking schemes of Chemistry ATP from Oct/Nov 2011?

 

[manicooljay]

go

Can I have the papers and marking schemes of Chemistry ATP from Oct/Nov 2011?

GO to papers on the top rows and select CIE then o-level then chemistry scroll down and select W2011 u will dind wat u need

 

[scouserlfc]

We arent provided with a periodic table in ATP right and the flame colour test(s) isnt in our syllabus
RIGHT ?

No i dont think so because in any ATP paper for chemistry u dont see the periodic table attached at the back when u do PAST PAPERS from XP !
And syllabus never states abt giving periodic table for it while it does for P1 and 2. Also in P4 u must have seen when they want u to do calculations involving Molecular or Atomic mass they do give their masses but u dont have an access to the periodic table physically

 

[manicooljay]

No i dont think so because in any ATP paper for chemistry u dont see the periodic table attached at the back when u do PAST PAPERS from XP !
And syllabus never states abt giving periodic table for it while it does for P1 and 2. Also in P4 u must have seen when they want u to do calculations involving Molecular or Atomic mass they do give their masses but u dont have an access to the periodic table physically

but in some questions they tell us to find the Mr of the element and then they ask which element is this....

 

[scouserlfc]

but in some questions they tell us to find the Mr of the element and then they ask which element is this....

yeah i know then if u are lucky and u have looked at the periodic table especially the first 20 then u can easily predict but fear not see the MS for that paper they give a range of elements which u can pick check it out ur selF