I S M A T T E R A R O U N D U S P U R E ? ? ? ? ?
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Transcript of I S M A T T E R A R O U N D U S P U R E ? ? ? ? ?
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According to a scientist something is pure, it means that all the constituent particles of that substance are the same in their chemical nature.
A pure substance consists of a single type of particles.
SOME CONSUMABLE ITEMSSOME CONSUMABLE ITEMS
MIXTUREMIXTURE
Mixtures are constituted by more than one kind of pure form of matter, known as a substance. Soft drink and soil are not single substances .Whatever the source of a substance may be, it will always have the same characteristic properties. Therefore, we can say that a mixture contains more than one substance.
SOLUTIONSSOLUTIONSA solution is a homogeneous mixture of two or more substances .
ex: Lemonade soda water we think of a solution as a liquid that contains either a solid, liquid or a gas dissolved in it. But, we can also have solid solutions (alloys) and gaseous solutions (air).
ALLOYSAlloys are homogeneous
mixtures of metals and cannot be separated into their components by physical methods.
solution
SolventComponent present
In larger amountEx: water
SoluteComponent present
In lesser amountEx: sugar
• A solution is a homogeneous mixture.• The particles of a solution are smaller than 1 nm (10-9 meter ) in diameter. So, they cannot be seen by naked eyes.• The solute particles cannot be separated from the mixture by the process of filtration.
PROPERTIES OF PROPERTIES OF SOLUTIONSSOLUTIONS
At any particular temperature a solution that has dissolved as much solute as it is capable of dissolving, is said to be a saturated solution
If the amount of solute contained in a solution is less than the saturation level, it is called an unsaturated solution.
SUSPENSIONSUSPENSIONA suspension is a heterogeneous mixture in which the solute particles do not dissolve but remain suspended throughout the bulk of the medium.
COLLOIDAL SOLUTIONCOLLOIDAL SOLUTIONIT IS A HETEROGENOUS IT IS A HETEROGENOUS MIXTURE OF TWO OR MORE MIXTURE OF TWO OR MORE COMPONENTS HAVING COMPONENTS HAVING PARTICULAR SIZE LESS THAN PARTICULAR SIZE LESS THAN THAT OF SUSPENSION AND THAT OF SUSPENSION AND GREATER THAN THAT OF GREATER THAN THAT OF SOLUTIONSOLUTION
TYNDALL EFFECTCOLLOIDAL PARTICLE CAN SCATTER A BEAM OF VISIBLE LIGHT BECAUSE OF ITS SMALLER SIZE. THIS PHENOMENON IS KNOWN AS TYNDALL EFFECT
DISPERSED PHASE
DISPERSPERSING MEDIUM
TYPE
EXAMPLE
LIQUID GAS AERSOL FOG SOLID GAS AEROSOL SMOKEGAS LIQUID FOAM CREAM
LIQUID LIQUID EMULSION MILKSOLID LIQUID SOL MUDGAS SOLID FOAM RUBBER
LIQUID SOLID GEL BUTTERSOLID SOLID SOLID SOL GEMSTONE
SEPARATION OF MIXTURE OF TWO IMMISCIBLE
LIQUIDS
SEPERATION USING SUBLIMATION (MIXTURE OF
NH4Cl AND SALT)
CRYSTALLISATION
WHEN A SATURATED HOT SOLUTION ALLOW TO COOL WE CAN OBSERVE THE FORMATION OF SOLID. THIS IS KNOWN AS CRYSTALLISATION.
ELEMENTS
METALS
METALOIDS
NON-METALS