Physics, Chemistry and Biology: Post your doubts here!

[kainat husain]

it was long as anything, and tricky too
but i'm not going to discuss any questions though

i know it was bad! 32 right? thefuse question was the wrost

 

[fishcook]

is chemistry paper 62, when you haad to label the electrodes i labeled them wrong first then corrected it but i scribbled on the incorrect line, will they give me the mark?

 

[ThatReallyReallyWeirdDude]

How was it ?

I just did p3 v1
Was good
Not discussing questions till 4:15 tomorrow

 

[fishcook]

is chemistry paper 62, when you haad to label the electrodes i labeled them wrong first then corrected it but i scribbled on the incorrect line, will they give me the mark?

 

[ZainH]

is chemistry paper 62, when you haad to label the electrodes i labeled them wrong first then corrected it but i scribbled on the incorrect line, will they give me the mark?

Don't see why not.

 

[fishcook]

cause i dont know, dont they go like the examiner wont give if the student gave 2 answers. like would they think that the scratched outline could be an answer.

 

[examkiller]

Ok so im having problems with tackling questions in chemistry..
In a question says : fertilizers are used to promote growth..
Two fertilizers are ammonium phosphate and calcium dihydrogenphosphate,
Describe a test to distinguish between these two fertilizers..
Test :.........:
Result : .........
Its 33/o/n/11 0620 chem
Q3

 

[ThatReallyReallyWeirdDude]

Ok so im having problems with tackling questions in chemistry..
In a question says : fertilizers are used to promote growth..
Two fertilizers are ammonium phosphate and calcium dihydrogenphosphate,
Describe a test to distinguish between these two fertilizers..
Test :.........:
Result : .........
Its 33/o/n/11 0620 chem
Q3

Add sodium hydroxide, and warm it
Ammonium will release a pungeant gas which turns litmus paper blue
Calcium will form a white precipitate insoluble in excess

 

[sma786]

Excuse me sci students
Does anyone have good notes n tips for phy paper 61 ??
I really need to get and A* in it because of today dumb paper

 

[salvatore]

Hey guys.. please help me with question 5 (b) in http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s09_qp_3.pdf I'm totally confused!

 

[sma786]

Hey guys.. please help me with question 5 (b) in http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s09_qp_3.pdf I'm totally confused!

because moles of NaF react with 1 mole of CaCl2 ..
so the mole ratio is Ca2+: F is 1:2

 

[salvatore]

because moles of NaF react with 1 mole of CaCl2 ..
so the mole ratio is Ca2+: F is 1:2

Thanks for ur reply.. I think u looked at the wrong question. Its qn 5 (b), regarding metal T & Na3PO4

 

[sma786]

Thanks for ur reply.. I think u looked at the wrong question. Its qn 5 (b), regarding metal T & Na3PO4

oh oops, m so sorry
i dunno how to do this

 

[Wasif`]

Excuse me sci students
Does anyone have good notes n tips for phy paper 61 ??
I really need to get and A* in it because of today dumb paper

Practice lenses, reflection, refraction, specific latent heat, conduction convection and evaporation and temperature changes, stretching force n all.

 

[sma786]

Practice lenses, reflection, refraction, specific latent heat, conduction convection and evaporation and temperature changes, stretching force n all.

and electric circuits and center of mass also so much to dooo ...!!

 

[Wasif`]

and electric circuits and center of mass also so much to dooo ...!!

oo yeha -.- don't worry it'll be easy, they can't make p-6 hard cuz p-3 was!

 

[sma786]

oo yeha -.- don't worry it'll be easy, they can't make p-6 hard cuz p-3 was!

but they made the paper like yeaars ago they dint knew v wud find it hard
anyways, i hope ur right .. i thnk chem p3 is also gonna be like like phy p3 -.- because bio p3 was also bad according to bio students

 

[Wasif`]

but they made the paper like yeaars ago they dint knew v wud find it hard
anyways, i hope ur right .. i thnk chem p3 is also gonna be like like phy p3 -.- because bio p3 was also bad according to bio students

Bio wasn't hard although the time was short , yeah chemistry will be pretty much similar -.- but i'm much good at it & we've like 5 days to prepare

 

[sma786]

Bio wasn't hard although the time was short , yeah chemistry will be pretty much similar -.- but i'm much good at it & we've like 5 days to prepare

yeah best of luck
pray for me

 

[Mohsin41]

any help need in chemistry????? i will help but just remmember me in prayers!!!!!