Chemistry Paper 61

[the_pharoh]

it was a very good paper

 

[ѕ.ɢ сяуѕтᴀʟѕ]

which reaction was it?....i wrote displacement

i wrote exothermic... they both r same!! its ryt

 

[Saadiya Ahmed]

i wrote exothermic... they both r same!! its ryt

LOL...i wrote bth!!

 

[Lujain M.]

The paper was good alhumdulillah

 

[ѕ.ɢ сяуѕтᴀʟѕ]

the first page last question 3 was little wierd!! wht u guys wrote for tht?

 

[tribianni]

PAPER WENT EPIC XD

 

[thats_me]

the first page last question 3 was little wierd!! wht u guys wrote for tht?

the boling thingy/??

 

[svenas]

the first page last question 3 was little wierd!! wht u guys wrote for tht?

I wrote precipitation...is it correct?

 

[Yousif Mukkhtar]

Yeah the answer is displacement/precipitation/ exothermic.

 

[svenas]

Yeah the answer is displacement/precipitation/ exothermic.

ok for the checking of purity..I wrote melting point??

 

[Yousif Mukkhtar]

ok for the checking of purity..I wrote melting point??

I wrote boiling lol.

 

[thats_me]

wat abt for the copper can?

 

[Moca]

ok for the checking of purity..I wrote melting point??

yeah i wrote melting point too , i think its correct because that is whats written in my notes

 

[svenas]

yeah i wrote melting point too , i think its correct because that is whats written in my notes

ok wat u wrote for the copper can?

 

[Moca]

ok wat u wrote for the copper can?

i think i got that one wrong i wrote the temperature becomes higher because copper is a catalyst

 

[EpicLol]

for the copper can I wrote all the things would be bigger

 

[Yousif Mukkhtar]

ok wat u wrote for the copper can?

Temperature rise will increase because copper is a good conductor of heat.

 

[EpicLol]

as copper is a better conductor

 

[EpicLol]

yay but I durped on like 2 questinos.... the mortar and pestle and for purity of crystals, I wrote dissolve in water and make sure it dissolves completely...

 

[Nawaf Dandachi]

Reaction should be Double Displacement.

Effect of Silver Nitrate : Yellow Precipitate

The 2nd graph is line of best fit. you should get 13.5-14-14.5 as an answer of that graph interpret ion question.

Purity of crystals by melting point or chromatography.

Method of separation : Filtration

Last question : Measure masses of steel before and after leaving in water with equal amounts of inhibitor. Mass should increase. the lightest was put in water with the most effective inhibitor. be fair in volume and conc of water , and volume of the inhibitor , and mass of the steel.

Cupper instead of glass will increase temperature rise as copper is a good conductor of heat . Glass is bad conductor of heat.