Physics, Chemistry and Biology: Post your doubts here!

[sma786]

Chem Help please, http://www.xtremepapers.com/CIE/Cambridge IGCSE/0620 - Chemistry/0620_s11_qp_61.pdf can anyone explain me Quetion 4, e (ii) ..

 

[kainat husain]

ok then can you wait so that i can write them all and send them 2 you ??

me too please

 

[Iridescent]

Test for silver ions
HELP!

 

[anam mahmood]

hi.....can u please tell me where i can get chemistry pastpapers for 1999-2002???
thank you

 

[Just Smie :)]

Hello How Was Ur Biology ?!

 

[afshinsalim]

It was good. It wasnt hard. I think i faired!! How was urs?

 

[Hasan Saimeh]

only 2days for p6 and iget 0/5 for my drawing hateful pat of p6

any reccomendes to how to review and study for p6 ispend alot of time studying but result is Nothing

LOL nearly same as you

but we'll put great effort on P3 and P1 inshAllah

 

[Just Smie :)]

It was good. It wasnt hard. I think i faired!! How was urs?

Mine Was So Good Actually I Think The Exam Was So Easy...Well Apart From The Onion Thing....

 

[always-smile :)]

me too please

ok i will

 

[always-smile :)]

Hey ,can anyone define concentration of a substance properly to me ..?

it is the amout of water found in the sub.

 

[always-smile :)]

hi.....can u please tell me where i can get chemistry pastpapers for 1999-2002???
thank you

u can use this site www.freeexampapers.com

 

[always-smile :)]

Chem Help please, http://www.xtremepapers.com/CIE/Cambridge IGCSE/0620 - Chemistry/0620_s11_qp_61.pdf can anyone explain me Quetion 4, e (ii) ..

use the values u recorded in b
in exp 1 the final =32 and the initial=0 the difference = 32
in exp 2 the final 35 and the initial=19 the difference = 16
so the amount used in exp 2 is double the amount used in exp 1
so the ans. is exp 1 has the amount used in exp 2 (x2)

 

[shafayat]

Hi guys.
Can some one help me out here?
I didn't take any tuition of Biology, Chemistry and Physics.
Now I am having trouble, where should I study all the lab experiments and investigations from which are in the GCE O level course????
Like the colour changes etc? Can any one help me out please? Should I just do the ATP papers? OR is there any specific place where there are notes to study for chemistry biology physics colour changes, lab activities and investigations?? HELP HELP ??

gimme ur e-mail ! I will send u some stuff

 

[always-smile :)]

Test for silver ions
HELP!

look at this relation ----> when we test for iodine or bromine ions we use silver nitrate
so make the inverse ((( to test for silver ions use iodine )))

 

[always-smile :)]

these r the most important things u need 2 knw in chem
then i will give u the summarized lessons which r in paper 6

 

[shafayat]

The potential difference across the variable resistor is 7.0 V and that across the

ammeter is zero.

(i) Calculate the potential difference across the magnetising coil.

potential difference = .................................

(ii) State the general principle used in making this calculation.

...................................................................................................................................

...................................................................................................................................

do u know the answer now?

 

[shafayat]

ok i will

smile always !!

can u plz help me also with chemistry ? I damn badlyneed help in chemistry .. and also in physics and bio if u dont mind plzz

may allah bless u

 

[shafayat]

Chem Help please, http://www.xtremepapers.com/CIE/Cambridge IGCSE/0620 - Chemistry/0620_s11_qp_61.pdf can anyone explain me Quetion 4, e (ii) ..

try this

 

[always-smile :)]

smile always !!

can u plz help me also with chemistry ? I damn badlyneed help in chemistry .. and also in physics and bio if u dont mind plzz

may allah bless u

I think i can help more in phy and chem but in bio i will try as much as i can
wat exactly to u need??

 

[shafayat]

I think i can help more in phy and chem but in bio i will try as much as i can
wat exactly to u need??

aww.. so damn sweet of u ...
some r pastpapers doubts and some are explanations ...

to start with ! if we are diluting something its concentration changes? and if it does does its volume changes ? n if its an acid !! its strength changes?