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Author Topic: CHEM AND BIO HELP AND TIPS HERE  (Read 367874 times)

6394

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #885 on: May 16, 2010, 05:36:10 pm »
Quote from: Kimo Jesus on May 16, 2010, 05:31:03 pm
im gr8 :P its just tht i have to do 8 more paper 6 for 2day ..boring :/ but this site encourages me raelly !! thx 4 askin :P
i noe this syt is criously so hlpful!!!!!
;D
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6394

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #886 on: May 16, 2010, 05:37:15 pm »
Quote from: J.Darren on May 16, 2010, 05:31:44 pm
Traces of the solution to be exact, in Percipitation you get an insoluble ppt and a solution, the ppt must be rinsed to remove the traces of the solution. As rinsing would attach water molecules to the percipitate, it then must also be placed in an oven to dry ...
thnk u ;DDD
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6394

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #887 on: May 16, 2010, 05:41:20 pm »
Quote from: kim on May 16, 2010, 05:35:54 pm
just write locating reagent for ur answer ull get the mark
believe me i did my ig last year and dats all i learnt
rofl at ur signature
:D;P
n Thanks
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Offline Kim

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #888 on: May 16, 2010, 05:42:13 pm »
haha lol
i know
and no prob
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Offline omair

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #889 on: May 16, 2010, 05:49:47 pm »
guys  experiments and procedures for p6 bio please dicuss themm also
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Offline Baladya

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #890 on: May 16, 2010, 06:20:37 pm »
Hey for the Fractional distillation, the glass rods are to hold back the other liquids (the other liquids in the mixture which isn't their turn to evaporate) right??
Thanks ;D
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Offline WARRIOR

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #891 on: May 16, 2010, 06:31:10 pm »
Quote from: Baladya on May 16, 2010, 06:20:37 pm
Hey for the Fractional distillation, the glass rods are to hold back the other liquids (the other liquids in the mixture which isn't their turn to evaporate) right??
Thanks ;D
well the longer the fractionating column the pureer the distillate and better seperations

actually other liquids condesce on those those rods whie the main liquid whose turn is to evaporates keeps evaporating..! but yea whth u said is right
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Offline Baladya

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #892 on: May 16, 2010, 06:37:34 pm »
Thanks man :)
Another thing, Chromatography is to seperate solids dissolved in a solvent or liquids dissolved together??
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Offline Adzel

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #893 on: May 16, 2010, 06:40:53 pm »
liquids dissolved together  ;)
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Offline Baladya

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #894 on: May 16, 2010, 06:46:27 pm »
cool  8) :D

omg next weak gonna be so boring 2 exams in one day and no day offs :S
I can't believe they are giving us a 10 days holiday just for Chem and Bio paper 6  >:( They should've divided it on the exams and let us finish earlier -.-  :(
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Offline WARRIOR

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #895 on: May 16, 2010, 06:50:04 pm »
Quote from: Adzel on May 16, 2010, 06:40:53 pm
liquids dissolved together  ;)

huh  ??? ??? ???

definition of crhomatography : used to seperate and identify a mixture of substance ( I.E SOLUBLE DYES sOLIDS) accodrding to their solubilty in the solvent adn their attraction to chrommatorgraphy paper :/

hw is it liquids dissolved toghert?
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Offline Baladya

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #896 on: May 16, 2010, 06:54:02 pm »
hahahha see thats why i'm confused. A book saying this, and another saying that
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Offline WARRIOR

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #897 on: May 16, 2010, 07:00:30 pm »
Quote from: Baladya on May 16, 2010, 06:54:02 pm
hahahha see thats why i'm confused. A book saying this, and another saying that

maybe he meant fractional distillation..most proabbly
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Offline gold_wings

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #898 on: May 16, 2010, 07:22:25 pm »
Chromatography can be  the speration of any type of mixture.
Paper chromatography is used to separate solid mixtures, other chromatographies include gas and liquid.
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Offline Shazizzzle

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Re: CHEM AND BIO HELP AND TIPS HERE
« Reply #899 on: May 16, 2010, 08:14:24 pm »
Quote from: Baladya on May 16, 2010, 06:46:27 pm
cool  8) :D

omg next weak gonna be so boring 2 exams in one day and no day offs :S
I can't believe they are giving us a 10 days holiday just for Chem and Bio paper 6  >:( They should've divided it on the exams and let us finish earlier -.-  :(

Yeah! :@ :(
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