"O" Level Chemistry, some doubts

Garrick_3658 SG

Ripped from SEAB pure chem 5072 syllabus document

aluminium hydroxide - white
calcium hydroxide - white
copper(II) hydroxide - light blue
iron(II) hydroxide - green
iron(III) hydroxide - red-brown
lead(II) hydroxide - white
zinc hydroxide - white

Seems stupid because this is actually what you learn in QA. But it'll be good for the rest who don't know.

EDITED.

16/f/lonely SG

Chlorine = yellow-green.

That's what I can still remember.

Edit: Oh, and iodine = purple.

davidche SG

your agents. Potassium dichromate orange become green.

Ok test for presence of water: cobalt chloride blue to pink

Copper sulphate white to blue

Garrick_3658 SG

Oh yes, redox agents.

Cobalt chloride is for water. Blue to pink i suppose.

UltimaOnline SG

Copper (II) carbonate - GREEN (yes i wonder why)

There you go, something for you to (eagerly) look forward to taking Chem at 'A' levels. Betcha can't wait for JC life... in fact, right now you sooooo wish you can make an online registration switch to taking 'A' level exams next week instead of 'O' levels, no doubt!

Garrick_3658 SG

Haha, no, I have no clue what's the A level Chemistry syallbus is about! :D

And I think I still have lots of O level concepts to master.

UltimaOnline SG

Haha, no, I have no clue what's the A level Chemistry syallbus is about! :D

Here, this should whet your appetite, and gave you something to look forward to during the Dec hols :

H2 Chemistry :

http://www.seab.gov.sg/SEAB/aLevel/syllabus/2009_GCE_A_Level_Syllabuses/9746_2009.pdf

H3 Chemistry :

http://www.seab.gov.sg/SEAB/aLevel/syllabus/2009_GCE_A_Level_Syllabuses/9812_2009.pdf

But after reading the exciting, seductive syllabuses; try (I understand it's tough, but do try) to restrain yourself and not break into the JCs during the Dec hols, wear their uniforms, and set up camp in their lecture theatres eagerly waiting for the school semester to begin.

Garrick_3658 SG

Just checked the o level chem syllabus (new one with spa)

and I feel cheated. I checked this shit so many times, and this is the first time i realised that it has a last page.

ok, so my post is probably redundant now. I hope what I am gonna edit into the OP is gonna serve my follow o level pure chem 5072 mates well.