Chemistry Paper 6 - Important notes and repeated questions.

[Lujain M.]

copper carbonate is green, copper sulfate is blue, copper chloride is blue, copper oxide is black and copper is red/brown (pink) ! oh and copper hydroxide is blue too as when u test it with Naoh it gives blue ppt

 

[pk1947]

V IMP

http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w11_qp_61.pdf
Q 2 part c part 2
plz explain hw to do dz
pleaseeee

 

[Lujain M.]

extend the graph til it meets the y axis. u should get 1

 

[pk1947]

from where r we supposed to extend it?

 

[Lujain M.]

from the point you plotted at 5 cm3

 

[pk1947]

im so sorry...i feel like such a dumb ass....
i dun get it....till where should we extend?

 

[pk1947]

ohh got itt
thanksss though

 

[Lujain M.]

hahaha it's okayy

 

[mohammad Shahzar]

YOU LEGEND!!!

 

[dana xP]

thanx alot it really helped me to revise on the whole p6 content ,,,, !!!

 

[Ahmed Alaa El-shamy]

guys can anyone please explain the term saturated ?

 

[mrnt3250]

guys can anyone please explain the term saturated ?

If you take this meaning for a liquid, it means it has reached the point where no more solute could be solved in the solvent (like no more sugar in a tea), then excess of the solute will form (like sugar particles)
But if you want to use it in organic chemistry, then saturated hydrocarbons (alkanes) are those hydrocarbons which have a single bond of carbon.

 

[Abhihsek]

Paper 6 chem was like super easy, easy A*!!
thanks a lot for all the notes and tips man, VERY Useful!
THANKS!!!

 

[Z.A.M]

How was the paper guys if you have given it
I think v1 was gr8 V.easy

 

[pk1947]

EASY

 

[Z.A.M]

EASY

I know it was gr8

 

[pk1947]

I know it was gr8

Alhmdulilah

 

[Lujain M.]

It wass goooddd thankk goddd

 

[Z.A.M]

It wass goooddd thankk goddd

Hope physics p3 goes well too

 

[Wasif`]

It was Easy, the last question answer was :-
1. Place each Corrosion inhibitor in 3 test tube of equal amount.
2. Take 3 steel nails and place them in 3 water bowl.
3. Place each inhibitor in bowl.
5. Leave it undisturbed for 3-4 days in presence of air.
6. After 4 days, Remove the rust which will be Flaky brown solid (FE2OH3.xH2O) and dry them and weigh each of them.
7. The one which has more weigh will be least effective corrosion inhibitor and one with lower weight will most effective corrosion inhibitor.