If you have any question on chem p6 im ready you guys. Don't Worry!!

[Afraah]

yeah but that doesn't make it more accurate !!

OMG NEVER MIND >...<"""

 

[Bassem]

guys i have a question. in anlysis, what is the difference of an Antiseptic smell and a vinegar smell? does it just mean that they are organic (ethanoic acid)

TODAY'S EXAM? IF YES, I WROTE VINEGAR SMELL

 

[mrnt3250]

Uhm well if that's what YOU think then okay...
but i knw that measuring cylinders are WAY more accurate
go to 2011 M/J frst question!!!! ull knw why!

Learning from mistakes is not a bad thing, I have done it many times.
Just check your notes.

 

[mrnt3250]

TODAY'S EXAM? IF YES, I WROTE VINEGAR SMELL

I actually forgot that exact name, so I wrote an alternative Sharp Smell.

 

[Afraah]

Learning from mistakes is not a bad thing, I have done it many times.
Just check your notes.

Well im just telling u what my teacher told us!! i dont brag... and wen im wrong, then i do admit it and i go like ''sorry'' ... but since im in doubt i cnt say who's right...

 

[mrnt3250]

Well im just telling u what my teacher told us!! i dont brag... and wen im wrong, then i do admit it and i go like ''sorry'' ... but since im in doubt i cnt say who's right...

No problem dear!
Best way is to clear your doubts.
This is the direct scan from my text book ( Endorsed by CIE ).

 

[Afraah]

No problem dear!
Best way is to clear your doubts.
This is the direct scan from my text book ( Endorsed by CIE ).

Oh why thank u then =)
Im sorry now.. dint know earlier...

 

[Yousif Mukkhtar]

In MJ 10, Q1:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s10_qp_61.pdf
Can someone explain to me why the mistakes is that gas should be collected downwards

 

[Yousif Mukkhtar]

I got it now.

 

[Afraah]

In MJ 10, Q1:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s10_qp_61.pdf
Can someone explain to me why the mistakes is that gas should be collected downwards

hi
Uhmm becz the say in the Question the gas is denser than air
So for gases that are denser than air, u should carry out an upward displacement of air
not a downward displacement

 

[Yousif Mukkhtar]

hi
Uhmm becz the say in the Question the gas is denser than air
So for gases that are denser than air, u should carry out an upward displacement of air
not a downward displacement

Oh okay, that is why we say the gas should be collected downwards. It means the gas jar should be placed inverted and then the gas can be collected downwards by displacing the air upwards.

Thanks

 

[Afraah]

Oh okay, that is why we say the gas should be collected downwards. It means the gas jar should be placed inverted and then the gas can be collected downwards by displacing the air upwards.

Thanks

Yes like the jar in the question just invert it that's an upward displacement ... if u get confused, the reason they say upward though the jar is the other was round is bcz as the gas comes out of the tube the rise UP the jar

 

[Yousif Mukkhtar]

Yes like the jar in the question just invert it that's an upward displacement ... if u get confused, the reason they say upward though the jar is the other was round is bcz as the gas comes out of the tube the rise UP the jar

Yeah I understand. Thanks.

 

[Afraah]

Yeah I understand. Thanks.

welcome Good Luck =)

 

[Yousif Mukkhtar]

welcome Good Luck =)

Inshallah.

 

[Afraah]

Inshallah.

Ameen =)

 

[Yousif Mukkhtar]

Guys for questions like: "Why was the total volume kept constant?"

Can we just say to have a far test?

 

[Razo513]

ohh okayee thx & np .. well i had another doubt is mass inversely propotional to temperature rise??

logically .. increase it temp .. particles move faster breaking the bonds between them at a certain temp rise & therefore a liquid can become a gas & gas has less mass than liquid not sure though

 

[Ahmed Raouf]

i need help in colored compounds and their colors, i only know that copperoxide isblack (not even sure)

 

[humanlaser]

what does this observation indicate ???????
"condensation at top of tube" PLEASE HELP !!!
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w05_qp_6.pdf
its in question 5