This document provides information on techniques for separating mixtures. It discusses several methods including sedimentation and decantation, filtration, evaporation, distillation, crystallization, sublimation, chromatography, centrifugation and solvent extraction. The document is intended for a 9th grade science class and aims to teach students how to select the appropriate separation method based on the components of a mixture. It includes links to videos demonstrating each technique.
Heterogeneous and Homogeneous Mixtures are discussed in this presentation. High School chemistry, physical science, environmental science, earth systems, and material science students will benefit from this presentation. All essential introductory concepts are presented here.
Heterogeneous and Homogeneous Mixtures are discussed in this presentation. High School chemistry, physical science, environmental science, earth systems, and material science students will benefit from this presentation. All essential introductory concepts are presented here.
A mixture forms when two or more substances are combined such that each substance retains its own chemical identity. Everywhere around us are made up of mixtures. We can see them in nature, along the surface of the earth, in the oceans and in the foods we eat. There are infinite numbers of mixtures that can be combined into homogeneous or heterogeneous.
my slideshare consist of various activities that can easily understand by the pupils and also videos which can be visualize and guide pupils how to do the hands on activity.
this is a CAI which can help student learn the different methods in separating mixture and solution . its also for how to teach methods in separating mixture and solution. with quiz or assessment.drill. its a complete lesson plan , lesson
A mixture forms when two or more substances are combined such that each substance retains its own chemical identity. Everywhere around us are made up of mixtures. We can see them in nature, along the surface of the earth, in the oceans and in the foods we eat. There are infinite numbers of mixtures that can be combined into homogeneous or heterogeneous.
my slideshare consist of various activities that can easily understand by the pupils and also videos which can be visualize and guide pupils how to do the hands on activity.
this is a CAI which can help student learn the different methods in separating mixture and solution . its also for how to teach methods in separating mixture and solution. with quiz or assessment.drill. its a complete lesson plan , lesson
The important methods for separation and purification of organic compounds are: Crystallization, Sublimation, Distillation, Differential extraction and chromatography.
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IS MATTER AROUND US PURE ? ( CLASS IX )DHRUVGUPTA204
WE KNOW KNOW ALL THING THAT OCCUPIES SPACE CALLED MATTER . BUT WE DO KNOW THAT THE TING OR MATTER IS PURE OR NOT . SO I WANT TO SHARE MY IDEA WITH YOU ............. THANK YOU .
hello friends this is dattatreya and team.so we all did research on the 2nd chapter of chemistry that is "is matter around us pure so hope you like it and please download it....
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By Design, not by Accident - Agile Venture Bolzano 2024
Simple techniques of separating mixtures
1. Simple techniques of separatingSimple techniques of separating
mixturesmixtures
AKM B- FormAKM B- Form
2. Lesson PlanLesson Plan
To see the lesson plan ,please click on theTo see the lesson plan ,please click on the
following linkfollowing link
CLICK
3. AudienceAudience
Grade: 9Grade: 9
Age Group: 15 yearsAge Group: 15 years
Learner profiles –Different abilitiesLearner profiles –Different abilities
[intelligent, mediocre and slow learners][intelligent, mediocre and slow learners]
Their learning styles are differentTheir learning styles are different
4. Learning ObjectivesLearning Objectives
By the end of this session:By the end of this session:
Students will be able to select the appropriateStudents will be able to select the appropriate
method to separate the given mixtures based uponmethod to separate the given mixtures based upon
the information available about the components ofthe information available about the components of
the mixture.the mixture.
Students will understand the following terms:Students will understand the following terms:
sedimentation & decantation, filtration, evaporation,sedimentation & decantation, filtration, evaporation,
distillation and crystallization.distillation and crystallization.
Students will develop skills of using variousStudents will develop skills of using various
techniques to separate mixtures.techniques to separate mixtures.
5. Sedimentation and decantationSedimentation and decantation
Separating an insoluble solid/liquid mixture.Separating an insoluble solid/liquid mixture.
Let us see how we can separate a mixture ofLet us see how we can separate a mixture of
sand and water.sand and water.
Click
6. FiltrationFiltration
We will see now how we can separate aWe will see now how we can separate a
mixture of sulphur and water.mixture of sulphur and water.
Click
7. EvaporationEvaporation
Separating a solute from a solute/solventSeparating a solute from a solute/solvent
mixturemixture
This method is used to separate a solid soluteThis method is used to separate a solid solute
from a solventfrom a solvent
Click
8. DistillationDistillation
During evaporation or boiling, the liquidDuring evaporation or boiling, the liquid
solvent is lost to the air. If the solvent issolvent is lost to the air. If the solvent is
important it can be separated from the mixtureimportant it can be separated from the mixture
using a process called distillation.using a process called distillation.
10. CrystallisationCrystallisation
To separate a solute from its solvent, we heatTo separate a solute from its solvent, we heat
the solution gently. The solvent evaporates andthe solution gently. The solvent evaporates and
the concentration of the solute rises until thethe concentration of the solute rises until the
solution is saturated. If the heat is removedsolution is saturated. If the heat is removed
this at this time and the solution is left to cool,this at this time and the solution is left to cool,
the solid will form crystals.the solid will form crystals.
Let us see this pictureLet us see this picture
12. SublimationSublimation
When a sublimable substance is mixed with otherWhen a sublimable substance is mixed with other
substances which do not sublime, separation bysubstances which do not sublime, separation by
heating is possible.heating is possible.
Sublimable substances are Iodine crystals,Sublimable substances are Iodine crystals,
Ammonium chloride and camphor.Ammonium chloride and camphor.
They change directly into gas when heated andThey change directly into gas when heated and
change back to solid on cooling, without changing tochange back to solid on cooling, without changing to
the intermediate liquid state.the intermediate liquid state.
13. SublimationSublimation
We will see how can we separate a mixture ofWe will see how can we separate a mixture of
ammonium chloride and sand.ammonium chloride and sand.
Click
14. Separating FunnelSeparating Funnel
When two immiscible liquids are mixedWhen two immiscible liquids are mixed
together they eventually form layers, if left totogether they eventually form layers, if left to
stand.The less dense liquid forms a layerstand.The less dense liquid forms a layer
above the more dense liquid.above the more dense liquid.
Click
15. Separation of two immiscible liquidsSeparation of two immiscible liquids
using a seaparting funnelusing a seaparting funnel
16. Fractional DistillationFractional Distillation
Two miscible liquids with quite close boilingTwo miscible liquids with quite close boiling
points, such as water(100points, such as water(10000
C) and ethanolC) and ethanol
(78(7800
C) can be separated by fractionalC) can be separated by fractional
distillation.distillation.
The separation occurs in the fractionatingThe separation occurs in the fractionating
coulmn.This is filled with glass beads. Duringcoulmn.This is filled with glass beads. During
the fractionating process the liquids condensethe fractionating process the liquids condense
and evaporate from the beads many times.and evaporate from the beads many times.
18. ChromatographyChromatography
A pure dye contains only one colour.Black inkA pure dye contains only one colour.Black ink
is made from two or more coloured dyes.is made from two or more coloured dyes.
Separating substances like this is calledSeparating substances like this is called
chromatography.chromatography.
The pattern of colours you get is called aThe pattern of colours you get is called a
chromatogram.chromatogram.
20. Spreading at different speedsSpreading at different speeds
Chromatography is used to split up a mixtureChromatography is used to split up a mixture
of substances that dissolve in the sameof substances that dissolve in the same
liquid.The substances spread across the paperliquid.The substances spread across the paper
at different speeds.at different speeds.
Brown ink is made from a mixture ofBrown ink is made from a mixture of
yellow,blue and red inks.They can also beyellow,blue and red inks.They can also be
separated by paper chromatography.separated by paper chromatography.
For more techniques click here
21. Centrifugation/ChurningCentrifugation/Churning
Centrifugation is the method of separatingCentrifugation is the method of separating
solids from a liquid where the mixture issolids from a liquid where the mixture is
homogeneous. The sedimentation ofhomogeneous. The sedimentation of
suspended particles in a liquid takes place verysuspended particles in a liquid takes place very
slowly. The mixture is taken in two speciallyslowly. The mixture is taken in two specially
designed test tubes known as the centrifugedesigned test tubes known as the centrifuge
tubes. They are placed in two separate holders.tubes. They are placed in two separate holders.
The holders are then rotated rapidly with theThe holders are then rotated rapidly with the
help of a handle.help of a handle.
22. Centrifugation/ChurningCentrifugation/Churning
After some time the rotation is stopped and theAfter some time the rotation is stopped and the
centrifuge tubes are taken out. It is seen thatcentrifuge tubes are taken out. It is seen that
solid particles have settled down at the bottomsolid particles have settled down at the bottom
of the tubes. The supernatant liquid above theof the tubes. The supernatant liquid above the
solid is collected by decantation.solid is collected by decantation.
If the density of solid is lighter than liquid ,itIf the density of solid is lighter than liquid ,it
comes in the upper layer.comes in the upper layer.
These days electric churners are used.These days electric churners are used.
23. ApplicationsApplications
It is used forIt is used for
Separating cream from milk and butter fromSeparating cream from milk and butter from
curd in dairies or at home.curd in dairies or at home.
In washing machines to squeezing out waterIn washing machines to squeezing out water
from wet clothes.from wet clothes.
In diagnostic laboratories for testingIn diagnostic laboratories for testing
blood/urine.blood/urine.
25. By Solvent extractionBy Solvent extraction
It is the process of dissolving one of theIt is the process of dissolving one of the
components in a particular liquid either watercomponents in a particular liquid either water
or any other solvent in which it gets dissolvedor any other solvent in which it gets dissolved
and the other component does not dissolve.and the other component does not dissolve.
For example , a mixture of iron filings andFor example , a mixture of iron filings and
sulphur is separated by using carbon disulphidesulphur is separated by using carbon disulphide
as solvent.as solvent.
A mixture of sodium chloride and chalk canA mixture of sodium chloride and chalk can
also be separated by using water as the solventalso be separated by using water as the solvent
for sodium chloride.for sodium chloride.
26. Home AssignmentHome Assignment
For assignment on “Simple techniques ofFor assignment on “Simple techniques of
Separation of mixtures", click on the linkSeparation of mixtures", click on the link
given below.given below.
Assignment
27. ReferencesReferences
Google Image:Google Image: www.google.co.inwww.google.co.in for imagesfor images
Meta:Meta: www.ixquick.comwww.ixquick.com for graphics and informationfor graphics and information
http://http://www.youtube.com/watch?v=sBCLafMPVt8www.youtube.com/watch?v=sBCLafMPVt8 for Sedimentation &for Sedimentation &
decantationdecantation
httphttp://://www.youtube.com/watch?v=Q0s71cjCNWswww.youtube.com/watch?v=Q0s71cjCNWs for Filtrationfor Filtration
http://http://www.youtube.com/watch?v=t2ZjWJsgGLo for Evaporationwww.youtube.com/watch?v=t2ZjWJsgGLo for Evaporation
http://www.youtube.com/watch?v=xxNfJLMNS4E for Distillationhttp://www.youtube.com/watch?v=xxNfJLMNS4E for Distillation
http://www.youtube.com/watch?v=W6hwOG7Dzf8 for Sublimationhttp://www.youtube.com/watch?v=W6hwOG7Dzf8 for Sublimation
http://www.youtube.com/watch?v=vonoRZhWBvY for Fractionalhttp://www.youtube.com/watch?v=vonoRZhWBvY for Fractional
distillationdistillation
http://www.youtube.com/watch?v=Uw7LCwMmOu8 for Chromatographyhttp://www.youtube.com/watch?v=Uw7LCwMmOu8 for Chromatography