Column Chromatography Separating a mixture of food coloring Separating a mixture of food coloring.
Methods in separating mixture and solution (CAI)
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Transcript of Methods in separating mixture and solution (CAI)
What you’ll need?• Small soft drink bottle
• Water
• Food colouring
• 2 tablespoons of
cooking oil
• Dish washing liquid or detergent
Procedure:• Add a few drops of food colouring
to the water.
• Pour about 2 tablespoons of the coloured water along with the 2 tablespoons of cooking oil into the small soft drink bottle.
• Screw the lid on tight and shake the bottle as hard as you can.
• Put the bottle back down and have a look, it may have seemed as though the liquids were mixing together but the oil will float back to the top.
FILTRATION
used to separate an
insoluble solid from a liquid.
The solid remains in the
filter paper and the liquid
goes into the beaker.
The liquid that passes
through is the filtrate.
The substance that is left in
the filter paper is called the
residue.
VIDEO
MECHANICAL SEPARATION
Involves the use of forceps,
sieve, and other similar tools.
Gravel and sand are
separated by picking the
gravel or passing the mixture
into a wire screen. This
process is called sieving.
The use of magnets in
separating sulfur powder and
iron nails is appropriate when
metal is involved.
VIDEO
DECANTATION
Is a method where solids of
a suspension are made to
settle down and the liquid
materials poured off.
VIDEO
CENTRIFUGATION
Is a motor-driven machine thatspeeds up the settling of theprecipitate.
Uses the centripetal forcedeveloped through the rotationof the apparatus.
The rotation brings theprecipitate to the bottom of thetube, then the centrifugate orsupernatant liquid poured off.
VIDEO
DISTILLATION
is the evaporation and condensation of volatile liquids.
It uses a condenser to transform a gas into a liquid.
The more volatile liquid boils and evaporate first, then it is condensed on the cooled area of the set-up.
The distillate is the liquid formed after condensation.
VIDEO
FRACTIONAL DISTILLATION
Is a special type of distillation used to separate a mixture of liquids with different boiling points.
Different liquid boil at different temperatures.
When heated, they boil off and condense at different times.
The apparatus features a fractioning column, which ensures that only the liquid boils at its boiling point will pass through the condenser.
VIDEO
EASY
Direction: Choose the letter of the correct answer.
1. It is a method where solids of a suspension are made to settle down and the liquid material is poured off.
a. Centrifugation
b. Decantation
c. Filtration
2. What process involves the use of forceps, sieve, and other similar tools?
a. Distillation
b. Filtration
c. Mechanical Separation
3. ____________ is the evaporation and condensation of volatile liquids.
a.Distillation
b. Distillate
c. Fractional Distillation
4. It is used to separate an insoluble solid from a liquid.
A .Residue
b. Filtration
c. Filtrate
5. What method uses the centripetal force developed through the rotation of the apparatus?
a. Centrifugate
b. Centrifuge
c. Centrifugation
Directions: Use the describing wheel to summarize the different methods of separating mixtures.
Methods of Separating mixtures & solution
1. Make a list of all
the household chemicals
that you use at home.
Research on the possible
effects of their
components to the
environment.
2. Why is there a need to research and
test the effects of the components of those
substances?
3. How will your knowledge of mixtures and solutions help you
understand the environment?