Hiiii
Im Leatrice from 1E3
Im quite happy cuz my results were far better from what i expected :D
Hehe
The paper was reasonably okayyyy
I think i could have done better tho
I hope that SIA next year would be nice to me
So yeaaaaa bye
Sunday, 13 October 2013
Sunday, 25 August 2013
FILTRATION PPT :D
Powerpoint for Filtration <----Click that
Source:home.engineering.iastate.edu/~leeuwen/CE%20523/.../Filtration.ppt
Sunday, 18 August 2013
REFLECTION TIME
Chromatography Experiment
It was kinda FUN :D
But i could have done better
and yeaaaaaaaaaa
It was kinda FUN :D
But i could have done better
and yeaaaaaaaaaa
CRYSTALISATION N FILTRATION
Seperating salt and sand :D
1st-Fitration
2nd-Crystallisation
1st-Fitration
2nd-Crystallisation
DoneBy:XiRui and Meh~
Friday, 9 August 2013
SEPARATION OF MIXTURES RESEARCH :D
Research~
-
Drinking water purification
Pleasehhh read :D
SEPARATION OF MIXTURE
Filtration
-Filtration is for separating an insoluble solid from
a solid-liquid mixture.
-Sand,for example can be separated from liquid using filtration
-Sand,for example can be separated from liquid using filtration
Steps
-The filter paper is used to separate the mixture
because it has tiny pores
-Only the tiny dissolved substances can pass through the
tiny pores.
-The insoluble liquids that are too large to
pass through the pores will remain on the filter paper.
-The substances collected on the filter paper
is called residue.
-The solution collected in the flask is
called the filtrate
Applications
-Water taps usually have a simple filter to screen out large
mineral deposits.
-Coffee makers use a filter to keep the coffee grounds out of the water.
-A tea bag is a filter it filters tea leaves from the water.
-Coffee makers use a filter to keep the coffee grounds out of the water.
-A tea bag is a filter it filters tea leaves from the water.
Evaporation
-Is good for separating a soluble solid from a liquid.
-Example,copper sulphate crystals can be separated
from copper sulphate solution using evaporation.It is the water that evaporates,not the solution.
STEPS
-Liquid is heated to the point of
vaporization
-Leaving solids behind
APPLICATIONS
-Industrial applications include
recovering salts from solutions and drying a variety of materials such as
lumber,paper,cloth and chemicals.
Crystallisation
-Used to recover pure soluble solid from a solution which
is not heat stable
STEPS
-The solution is heated until it becomes saturated.
-It cools slowly so that the crystals can be
formed easily
*If the compound is not heat-stable,strong heating to dryness
would decompose it
APPLICATIONS
Macroscopic
crystal production: for supply the demand of natural-like
crystals with methods that "accelerate time-scale" for massive
production and/or perfection.
o Ionic crystal production;
o Covalent crystal production.
* Tiny size crystals:
o Powder, sand and smaller sizes: using methods for powder and controlled (nanotechnology fruits) forms.
+ Mass-production: on chemical industry, like salt-powder production.
+ Sample production: small production of tiny crystals for material characterization. Controlled recrystallization is an important method to supply unusual crystals, that are needed to reveal the molecular structure and nuclear forces inside a typical molecule of a crystal. Many techniques, like X-ray crystallography and NMR spectroscopy, are widely used in chemistry and biochemistry to determine the structures of an immense variety of molecules, including inorganic compounds and bio-macromolecules.
o Thin film production.
o Ionic crystal production;
o Covalent crystal production.
* Tiny size crystals:
o Powder, sand and smaller sizes: using methods for powder and controlled (nanotechnology fruits) forms.
+ Mass-production: on chemical industry, like salt-powder production.
+ Sample production: small production of tiny crystals for material characterization. Controlled recrystallization is an important method to supply unusual crystals, that are needed to reveal the molecular structure and nuclear forces inside a typical molecule of a crystal. Many techniques, like X-ray crystallography and NMR spectroscopy, are widely used in chemistry and biochemistry to determine the structures of an immense variety of molecules, including inorganic compounds and bio-macromolecules.
o Thin film production.
Magnetic attraction
-Uses magnets to separate magnetic substances from a mixture.
-E.g. of magnetic substances are iron,steel,nickel and cobalt
STEPS
-Use a magnet and place it in a sample of iron and sulphur powder
-The magnet would attract the iron powder
APPLICATIONS
-Used to separate particles out
based on magnetic properties
Paper Chromatography
-Is used to separate a mixture which is based on the extent
of solubility in given solvent
STEPS
-The basic paper chromatography has the following
features:
-The result of the separated components of
the chromatography paper is called the chromatogram
Reverse Osmosis
- In RO, an applied pressure is used to
overcome osmotic
pressure,
a colligative
property,
that is driven by chemical potential, a thermodynamic parameter
- RO can remove many types of molecules and ions from solutions and is used in both
industrial processes and to produce potable water
- The result is that the solute is retained on the
pressurized side of the membrane and the pure solvent is allowed to pass
to the other side
-To be "selective," this membrane
should not allow large molecules or ions through the pores (holes), but should
allow smaller components of the solution (such as the solvent) to pass freely
APPLICATIONS
-
Drinking water purification
- Household drinking water purification systems, including
a reverse osmosis step, are commonly used for improving water for drinking and
cooking.
Distillation
STEPS
-The
liquid is heated until its boiling point and changes vapour
-The
vapour is then cooled by a condenser and changes back into a liquid
-It is
collected in the receiver as a distillate
-The
impurities whch have much higher boiling points remain in the flask
-The
bulb of the thermometer must be placed near the opening of the condenser so
that it can measure the boiling point of the substance accurately
-During
the boiling of the substance,the temperature remains constant
-The boiling chips are added
for smooth boiling
APPLICATIONS
- Carbohydrate-containing plant materials are allowed to ferment,
producing a dilute solution of ethanol in the process
-
Components other than ethanol, including water, esters, and other alcohols, are
collected in the condensate,
which account for the flavor of the beverage
Fractional distillation
-Used
to separate a liquid-liquid
mixture which is miscible
-Miscible
liquids are 2 or more liquids that dissolve well in each other to form single continuous layer
STEPS
-Can
only be used if the liquids have different boiling points
-The
substance with a lower
boiling point is distilled first
-A
tall fractionating
column filled with glass or glass beads is the fractional distillation
-It
allows the separation of different liquids more efficiently
APPLICATIONS
-Separation of liquid
air
-Separation of crude
oil(or petroleum)
-Separation of ethanol
from sugar solution
Monday, 5 August 2013
Thishhh is da 2nd comic we did :D
http://Pixton.com/ic:4r7t9hvfd :D
About Orry the dumb animal and evaporation :D
Enjoyyyyyyyyyyyyyy (:
Done by:Leatrice(Me)
Glenys
Lorivie
http://Pixton.com/ic:4r7t9hvfd :D
About Orry the dumb animal and evaporation :D
Enjoyyyyyyyyyyyyyy (:
Done by:Leatrice(Me)
Glenys
Lorivie
Monday, 22 July 2013
Elements,Compounds and Mixture Video
Thisshhhh is a elements,compounds and mixture video :D
Enjoyyyyyyyy
Enjoyyyyyyyy
Atom and Molecules
Video about atoms and molecules
http://www.youtube.com/watch?v=vlSOESXQI7o
Enjoyyyyyyyyyyyyyyyyyyyyy :D
http://www.youtube.com/watch?v=vlSOESXQI7o
Enjoyyyyyyyyyyyyyyyyyyyyy :D
Sunday, 30 June 2013
About me
-My name is Leatrice
-I loveeeeeeeeeeeeeee SHINee,EXO,BAP,Justin bieber n i have alot of biases
-I fangirl alot
-I love jellies,food that taste nice and the colour orange and turqoise
-I hate birds especially ducks,flowers,tuna,fish,the colour yellow,psy and many more(I hate alot of stuff)Ohhhh...and SIA cuz its hard but im trying to like it.
Theres alot about me so im not writing everything :D
For more enquires please please please just call me at(Imma not giving my number btw :D)
Since its a SIA website,Imma putting a really formal picture of Key<3(Member of SHINee<3
Subscribe to:
Posts (Atom)