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20 posts
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Originally posted by TrixCereals:Btw, white powder most likely CO2?
Black solid most likely hydrogen cos metal oxide isit?
Nervous.
What? Catch no ball... say clearer leh.
White ppt in LIMEWATER is CO2. However, in NAOH or ammonium white ppt can be other things eg. Ca2+.
I dont get the part about hydrogen sorry
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Originally posted by Y_Shun:
Good luck to everybody!
[b]Things to bring:
IC
Entry Proof
Test-tubes(OPTIONAL)
Flexicurve
Long-ruler
Geometrical set
Calculator
Books(if you are at the first shift etc...need to be quarantined, use the time wisely)
Anything else to bring?[/b]This list is for Science (Chemistry, Physics) right?
I guess for Science (Chemistry, Biology), there is no need to bring mathematics equipments like flexicurve or geometrical set.
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Originally posted by TrixCereals:Btw, white powder most likely CO2?
Black solid most likely hydrogen cos metal oxide isit?
Nervous.
i 10pm slp.. struggle until now still cannot slp.. anyway...
i tink u mean if they give white powder.. wad gas will most likely be given out..
so imo.. if they give white powder.. 1st gas to test is CO2... 2nd gas to test is H2...
if they give silvery powder.. 1st gas to test is H2.. 2nd gas to test is C02...
eh wish u gd luck later !
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Physics graph -> curve
Damn! I never fasten my papers together with the booklet but I wrote my name on it...should be okay right?
1 mistake that few people did was to do everything on 1 piece of paper.
Chemistry, salt -> Zinc carbonate(wrote Pb, then change to Al, then change to Zn )
Think I won't get good marks because my observations was like all wrong
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Originally posted by Y_Shun:Physics graph -> curve
Damn! I never fasten my papers together with the booklet but I wrote my name on it...should be okay right?
1 mistake that few people did was to do everything on 1 piece of paper.
Chemistry, salt -> Zinc carbonate(wrote Pb, then change to Al, then change to Zn )
Think I won't get good marks because my observations was like all wrongya lo i oso do everytin on 1 piece of paper.. i finish untill 55 degree liao lei.. den i realise sumtin is terribly wrong.. ... ... den redo everyting.. hais.. sian..
den skip ehre n dere.. hais.. ez pratical oso can screw up lol
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Originally posted by metalcar:ya lo i oso do everytin on 1 piece of paper.. i finish untill 55 degree liao lei.. den i realise sumtin is terribly wrong.. ... ... den redo everyting.. hais.. sian..
den skip ehre n dere.. hais.. ez pratical oso can screw up lol
i do liao finish bio and physics left half hourr.. was cutting the specimens plants the teacher gave LOLS
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Originally posted by Darkness_hacker99:Actually I am supposed to take the Practical today, but didn't.
Hahaz. I heard from my sister that the salt is Zinc Carbonate. She wrote Calcium Oxide. *Faint*
ZZ..i wrote Zinc Chloride...tot gt chlorine.
Chem part very difficult,coupled with less time since i spent too much time on the physic part.
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Originally posted by ceecookie:ZZ..i wrote Zinc Chloride...tot gt chlorine.
Chem part very difficult,coupled with less time since i spent too much time on the physic part.Actually its easy .
Since the first experiment require you to test for carbon dioxide , reuse the apparatus for the second gas test . If you cant get for carbon dioxide , dhen use other tests. Heng i tested positive for carbon dioxide. Saved valuable time.
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