Chemistry Paper 8, and Physics paper 8 help and revision

[the golden girl]

yo people , data booklet is given to us. so chill

hmm any useful notes

 

[Evolution]

I can't find any

 

[the golden girl]

Why don't ya try googling => Useful websites + studentforums.biz ... hope it helps

Good luck hommiw =D

 

[Evolution]

lol, I did.
anyways, if you have anything useful I'd be extremely grateful if you posted it here.
Or perhaps you can summarize what I need to know for the exam, maybe a checklist?

 

[the golden girl]

revise unit 6B past papers

revise unit 3B past papers

revise the drawings for reflux , simple distillation ,fractional distillation and that weird Question in the jan 2012 paper (the determining temperature of liquid weirdo ya that one)

revise recrystallization , chromotography

all the ORGANIC tests

ALL the transition metals rxns and colour changings and perhaps take a look at the weird formulas (for me their weird )

hmm revise the tests for INORGANIC chemistry the gases the chloride salts ...etc

make ur own notes for your COMMON mistakes , it really helps focus on your weak points

I hope I helped , if I did then don't forget to include me in your prayers Please

Salam tc =]

 

[Evolution]

thanks alot!

 

[the golden girl]

my pleasure =]

 

[Evolution]

good morning guys, is everyone ready?

 

[Evolution]

Here a quick revision for transition metals, for anyone that's checking in to revise before the exam:

Vanadium:
+2 lavender
+3 green
+4 blue
+5 yellow

Chromium:
+2 blue
+3 green
+4 is yellow in (CrO4)-2 and orange in (Cr2O7)-2

Manganese:
+2 pale pink
+4 brown solid
+6 deep green
+7 purple

Iron:
+2 pale green
+3 yellow (in solution)

Cobalt:
+2 is red when hydrated, and blue when anhydrous
+3 red

Nickel:
+2 green

Zinc:
+2 white

Copper:
+2 white
+3 is blue/green in (CuCl4)-2

Additional Compounds:

• CuCO3 is Green
• CuO is black
• Cu2O is red
• [Cu(NH3)4]2+ and [Cu(RNH2)4]2+ are both deep blue

where R is anything...

 

[étudiante]

good morning guys, is everyone ready?

Morning n nopes!
feeling scared....

 

[étudiante]

THANKS A LOT
Evolution and the golden girl

 

[Evolution]

no problem is there anything missing in the list?

 

[étudiante]

the hydroxide ppts ryt? we need to know dem i guess...

 

[Evolution]

lol, yah, can you help me with that?

 

[étudiante]

sure! wait a min pls....

 

[Evolution]

btw I found some usefull sites:
http://revisionguide.blogspot.com/p/notes-to-study-forchemistry-paper-6.html
https://sites.google.com/site/urbangeekclassroomsg/chemistry-classroom/organic-chemistry
http://www.docbrown.info/page07/appendixtrans12.htm (this has the colours, but it looks way too complicated for me to try and read it )

 

[Evolution]

and ok take your time.

 

[étudiante]

Cu 2+ in OH- is blue ppt
Cu 2+ in NH3 is light blue ppt, dissolving to give a deep blue soln

Fe2+ in OH- is Green ppt
Fe3+ in OH- is brown ppt

Cr3+ in OH- green ppt, disolve to give green soln
Cr3+ in NH3 green ppt, dissolves to give purple soln
Nn2+ browm ppt
Ni2+ green ppt, dissolves in NH3 to give a blue soln
Zn2+ white ppt, dissolves to give colorless soln

 

[Evolution]

thanks alot!!
are these all we need to know?

 

[étudiante]

urw

yup! dats it