CHEM AND BIO HELP AND TIPS HERE

[WARRIOR]

have you checked this?

https://studentforums.biz/index.php/topic,7663.0.html

and zinc ations tes

white ppt which is soulbe in exces with naoh  forming colourless soltuon
white ppt which is solube in excess with ammonia (aq) forming coourless soltn

[6394]

Got two doubts.

Firstly, I'm looking for any Notes/Diagrams/Worksheets on The Chemistry Lab apparatus, where they are all listed and named. I have already tried the Resources at freepastpapers.com and it does not come n handy as the notes are missing a lot.

Secondly, the syllabus mentions that we should describe the test for aqueous zinc cations, it's not in my Collins Chemistry book, so can anyone elaborate on this test?

Plus, I have a tiny request, if anyone has any good links to some great notes for Paper 6 Chemistry, I have already checked the notes submitted in this forum as a post, but they're kind of confusing.

Thanks in advance...

lol @ kimo jesus i was jus goin 2 sugest this 1
rofl
n u jus postd it 1st
  =D

[6394]

have you checked this?

https://studentforums.biz/index.php/topic,7663.0.html

and zinc ations tes

white ppt which is soulbe in exces with naoh  forming colourless soltuon
white ppt which is solube in excess with ammonia (aq) forming coourless soltn

u posted it 1st 

[Fastal]

colorimeter not calorimeter

its in the October/November 2005 Bio Paper 6-2(b) marck scheme

[Lariemeeva]

^^^Yes, I have.

So I'm left with those
Anyone else can help?

Firstly, I'm looking for any Notes/Diagrams/Worksheets on The Chemistry Lab apparatus, where they are all listed and named. I have already tried the Resources at freepastpapers.com and it does not come n handy
as the notes are missing a lot.

Plus, I have a tiny request, if anyone has any good links to some great notes for Paper 6 Chemistry, I have already checked the notes submitted in this forum as a post, but they're kind of confusing.

Thanks in advance...

[Vin]

lemme see if i can get some good links ..

if u hav checked the forum u might hav seen these ones too (which i've attached)..

[6394]

colorimeter not calorimeter

its in the October/November 2005 Bio Paper 6-2(b) marck scheme

ah den i dnt need 2 worry lolz
i actually gt scard because i nvr heard of this wrd
=P

[6394]

ah den i dnt need 2 worry lolz
i actually gt scard because i nvr heard of this wrd
=P

2 be more specific i dnt tak bio

[Lariemeeva]

Thanks VIN.
I actually saw that word document in the Resources but I thought they were missing a couple of things, but now with the diagram I guess that's all I need.

Edit:
If you can post those links it would be really great since I'm terribly desperate for some neat and comprehensible explanations...



 

[nid404]

https://studentforums.biz/index.php/topic,7663.0.html

https://studentforums.biz/index.php/topic,1593.0.html

http://www.chemactive.com/igcse_11_index.html


Check these

[Lariemeeva]

Thanks for those...

And I have some more doubts.

For the Methods of purification mentioned in the syllabus, I wanted to summarize their uses, so can anyone proof read this to check if it's right and give me a brief description on each of these processes?

1- Filtration - Separating insoluble solids form liquid (Mixtures).
2- Crystallization - Separating solute from solution.
3- Distillation - Separating solvent from solution.
5- Fractional Distillation - Separating two liquids which are miscible.

[Vin]

yup .. only thing u've typed crystallisation twice .. =P

How about Crystallisation - Separation of solvent from solute .. (check someone .. urs is right too)

also Fractional Distillation can be for more than two liquid too ..

[nid404]

here


http://library.thinkquest.org/11430/research/techniques.htm

great site...

[Lariemeeva]

Thanks VIN for the help and nid for the link!

[Shazizzzle]

For Paper 6 of Chemistry, you need to be able to:
-record readings from diagrams of apparatus
-describe, explain or comment on experimental arrangements and techniques
-complete tables of data
-draw conclusions from information given
-interpret and evaluate observations and experimental data
-describe tests for gases and ions, and/or draw conclusions from such tests
-plot graphs and/or interpret graphical information
-identify sources of error and suggest possible improvements in procedures
-suggest suitable techniques and apparatus for an investigation

Good Luck!