Chemistry Paper 8, and Physics paper 8 help and revision

[Evolution]

great!!
By the way here is the steps of recrystallisation:
• Dissolve the solid in the minimum volume of hot solvent.
• Quickly filter the hot solution using preheated filter funnel and
fluted filter paper.
• Collect the filtrate and allow to cool and the solid to recrystallise.
• Use suction filtration (Buchner funnel) to collect the solid.
• Wash the solid with a small amount of cold solvent.
• Dry the solid product.

 

[étudiante]

yup! thanks its da thing i remeber best

wat oder procedures r there btw? steam distillation and.............

 

[Evolution]

plotting volume/titre against time.
If that's what you mean

 

[étudiante]

ah nopes!
i meant stuff like distillation, recrystallization n stuff (purification procedures)

 

[Evolution]

yah

1. fractional distillation
2. Normal distillation
3. heating under reflex
4. filtration under reduced pressure (suction filtration)
5. melting point determination
6. boiling point determination

 

[étudiante]

yeah same ones here! thanks
also:
recrystallization
steam distillation
Separating funnel


ALL THE BEST EVRYONE

 

[Evolution]

oo ya, and the best of luck to you too

 

[Evolution]

the exam starts in 3 hours and 10 minutes

 

[étudiante]

oo ya, and the best of luck to you too

thanks

the exam starts in 3 hours and 10 minutes

hmm.... 4 hrs for me...
jittery... i NEED to do well in dis

 

[Evolution]

same here. by the way don't forget to revise all the organic reactions. If you want we can revise it together here if you still didn't leave lol

 

[étudiante]

same here. by the way don't forget to revise all the organic reactions. If you want we can revise it together here if you still didn't leave lol

yeah m here, breakfasting on the side

sure we can
which ones do u wanna revise?

 

[Evolution]

ALL! hahaha

 

[Evolution]

I'll start.

1. Alkanes + Al2O3 at 450 degrees = Alkenes
2. Alkenes + H2 and Ni cat = Alkanes
3. Alkanes + Halgones (X2) and UV = Haloalkanes
4. Alkeens + H3PO4 and water at 300 degrees and 60 atm = Primary Alchols
5. Alkeens + cold KMnO4 = Dihydroxylalkane
6. Alekene + Alkene + Alkene +....= long chain polymers
7. Alkeens + Br2 in CCl4 and dark = DiBromoAlkanes

 

[the golden girl]

you're welcome

the last two pages were weird right =/ ... Yallah inshAllah the examiner will be in a Happy mood when he checks my paper

 

[Evolution]

lol the whole exam was weirdddddddddddddddddddddddd

 

[Evolution]

how'd u do?

 

[étudiante]

da procedure they asked for? WHERE IN THE WORLD DI DAT COME FROM?????????????????????????????????????????????????

 

[svenas]

BACK PEOPLE????
HOW WAS IT?????????

quite different pattern from earlier papers do'n't u think?

Hii i just have a que for unit 6B phy how did u draw the graph for the wien's law? and wat was the approx. value

 

[étudiante]

Hii i just have a que for unit 6B phy how did u draw the graph for the wien's law? and wat was the approx. value

i drew a curve n the max wavelength i got was 15.5 or something.... m not sure abt the answer....

 

[Evolution]

i drew a curve n the max wavelength i got was 15.5 or something.... m not sure abt the answer....

same.