CHEMISTRY.. SEPERATING TECHINQUES quiz on TUESDAY.. help

[Vin]

SEPERATION OF SUBSTANCESS isnt working?? why
but the rest is amazing plz see if u can do anything about seperation of substances and is there any questions on the past papers that i can do relating to the things i will get a quiz on plz past paper 3 and 6 thanks

Hm.. try now. [This post]

Thanks loads Esha. Highly appreciated.

[Amii]

Hm.. try now.

Thanks loads Esha. Highly appreciated.

np vin   
wht shld i say fr u then      - higher than highly highly highly appreciated 

[Vin]

np vin   
wht shld i say fr u then      - higher than highly highly highly appreciated 

hahahaha! Believe me, your job required waayy more efforts and is waayy more tedious.

[Amii]

hahahaha! Believe me, your job required waayy more efforts and is waayy more tedious.

tedious-----ofc nt----just had to turn the pages   
anyway Take care n keep smiling 
have a chem test tom   

[Vin]

tedious-----ofc nt----just had to turn the pages    
anyway Take care n keep smiling  
have a chem test tom    

hahaha but still, they're too many.
yeah you too.

Oh, best of luck. You'll do really well.

Extraction of Iron

[Amii]

hahaha but still, they're too many.
yeah you too.

Oh, best of luck. You'll do really well.

Extraction of Iron

thank u   

[The Golden Girl =D]

Esha u deserve a + 1000000000000000000000000000000000000000000000000000000 infinity rep <3


Honey it is AMAZING <3

[The Golden Girl =D]

:O so chromotography is involved??

habeebti don't ya remember when mr.sumaiah used to give u Qs in her exams and if u look in her notes it's within the first two chapters i guess

[Vin]

*state of matter
*seperating techniques and mixtures

The three states of matter :

>Solid
>Liquid
>Gas

Properties of solid

Rigid – fixed definite shape
Highly incompressible
Least intermolecular space
Intermolecular force of attraction is greatest
Type of motion of molecules : They vibrate along their mean position

Properties of liquid

Indefinite shape – takes the shape of the container
Incompressible
Intermolecular space greater than solids and lesser than liquids
Intermolecular force of attraction lesser than solids
Type of motion of molecules : Random, constant movement of molecules

Properties of gas

Indefinite shape – Completely fills the container creating a specific amount of pressure of the walls (dependent on the concentration of gas/number of molecules)
Highly compressible
Greatest intermolecular space
Intermolecular force of attraction least.
Type of motion of molecules : Random and uncertain (Brownian motion)

(also refer ppt)

Separation techniques and methods:

>Mixture of two solids : one soluble in water, other insoluble - Dissolve the mixture in water> Filter the contents> Dry the residue on paper> Evaporate the solution to obtain soluble solid.

>Mixture of solid particles (eg. sand) and water : Sedimentation (allow the solid to settle) > Decantation (carefully pour the solution from the container in order to leave the (sand) particles in the bottom of the original container. > Filtration (Filter any solid particles present after decantation in the solution of water)

>Mixture of solid particles (eg. sand/salts etc) and iron > Use magnet.

>Mixture of two or more miscible liquids > Fractional distillation  

>Mixture of two miscible liquids > Separating funnel.

>Idea of chromatography
[refer ppt for more info and diagrams]

[Vin]

*atomic structure
*bonding (metallic,covalent,ironic and macromolecular)

Atomic structure.

An atom consists of a nucleus and particles revolving around it at high speeds called electrons. These electrons are placed in different energy levels. If these electrons stop revolving, or slow down their motion, the nucleus will attract them towards itself (due to the difference of charges) and 'consume' them.

The nucleus consists of neutrons and protons. The nucleus determines the mass of the atom and the proton number determines the Atomic number of the atom.

The distribution of electrons for normal elements is as follows, i.e the maximum number of electrons each shell can accommodate:
1st- shell: K -> 2
2nd- shell: L-> 8
3rd- shell: M-> 18
4th shell: N -> 32

and so on.. The general formula is 2n2. Where 'n' is the shell number.

Remember:
(In reference to the Periodic table)

All the elements in the same group (column) have same number of outer shell electrons (also known as valence shell electrons)

The period number shows how many shells there are for each element.

Proton - Positively charged particles. Found in the nucleus. Atomic mass of 1.

Neutrons - No charge. Also present in the nucleus. Atomic mass of 1

Electrons - Negatively charged particles. Orbit around the nucleus in specific paths. Mass negligible (1/1837)

[Vin]

OK man, the bonding stuff tomorrow. I have very little time, sorry. Hope it won't be too late.

[wanabeastarstudent]

heyy thanks it helped.. d u have the bonding i highly apreciated it

[The Golden Girl =D]

heyy thanks it helped.. d u have the bonding i highly apreciated it

Isma3i ana mit2akda  inu if u ask Mrs.Sumaiah 3ala hal 2as2ila then she'll answer Wallah ...O ba3deen i gave u that tutor's No. try him OUT he HELPED me loads in Chem i fricikn LUBed the subject cuz of the way he teaches , it's like mujarad mal ma3looma tid5ul rasi it does NOT seem to get OUT

Gd Lcuk in that Quiz

[Amii]

Esha u deserve a + 1000000000000000000000000000000000000000000000000000000 infinity rep <3


Honey it is AMAZING <3

hehe.....thnxx    

chromatography/separating techniques-
ppr 6

s/93 - 3c-3f
w/93 - 2
s/94 - 1,2
w/ 94 - 2
s/95 - 2,3a,7c
w/95- 2
s/96 - 2
w/96 -3d-3g
s/97 - 1,5
w/97 - 1,3
s/98 - 6,7
w/98 - 1,2,3
w/99 - 2,4
s/00 - 6
w/00 - 1,5
o/n/01 - 1a

ppr 3-

w/95 - 5a
s/00 - 5 d

bonding-
ppr3

s/93 - 3c,4
s/94 - 3ai,3bi,3bii
w/94 - 1c
s/95 - 2 d
w/95 - 2 ci
s/96 - 1a
s/97 - 1 cii
s/98 - 5 d
w/98 - 2c
w/99 - 3a
s/00- 1
n/00 - 3 b
o/n/01 - 5a b c

Extraction-
ppr 3

w/93 - 5a
w/94 - 1a
s/96 - 3
w/96 - 1a
w/97 - 4a,b,c
w/99 - 1 a
o/n/01 - 4a b

states of matter-
ppr 3

s/95 - 2a,2b
s/96 - 5a

srry didn't give it on thursday     ws too lazy n rly had a lot of work    
temme if u want the pprs frm 88 
anyway gud luck.....Take care.....Keep Smiling