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How can distinguish a colloid from a suspension?
the colloidal particle show tyndal effect while suspended particles donot. Colloidal particles donot settle down but the suspended particles get settledown.
How is colloid distinguished from a solution or a suspension?
Solution: one phase system (solute or solutes in a solution) Colloid: two phases system, very stable dispersion in a dispersion medium, particles in the range 5-200 nm Suspension: two phases (or more) system, unstable, particles above 200 nm A colloid is distinguished from a solution and a suspension by the particles, because they usually have an electric charge, and they repel each other, so they do not collect into larger perticles that would settle out like those in solutions, and suspensions.
Can a coarse graiend soil be a honey combed structure?
NO, Only Very fine particles or particles of colloidal size(< 0.001 mm) may be in a flocculated or dispersed state. Coarse grained soil have greater size then 0.001mm and are heavier so settle down…..and form single grained structure….
What would happen to the particles in a mug of coffee it you let them cool down?
The particles may settle down at the bottom of the mug...
What is sedimation?
process in which heavier particles of an insoluble solid in a liquid settle down
How is a suspension different from a colloid?
Suspension has particles, same as colloids. However, the particles in a suspension do not settle down but if is no so for the colloid.
What are the application of colloids?
Applications of colloids are unlimited. Colloids find its applications in everyday life phenomena. Some of important applications of colloids are discussed.Purification of waterWater contains colloidal impurities .These impurities can be weeded out by using electrolyte like Alum. Alum is positively charged Al3+ ion which attracts negatively charged colloidal impurities. These neutralized particles settle down and pure water is decanted off. Thus Alum is used to remove dirt and impurities present in the colloidal solution. Food ItemsLarge numbers of food articles which we use in our daily life are colloidal in nature. For example, milk, butter and ice creams are colloidal in nature. MedicineMost of the medicines are colloidal in nature. Colloidal calcium and gold are administered by injections to raise the vitality of human system. Smoke Precipitation using Cottrell precipitatorColloidal particles of Smoke and dust are major source of pollution in big industrial cities. Smoke precipitation is technique of precipitating smoke particles present in air. Smoke particles are the electrically charged colloidal particle suspended in air. To remove these particles from air, Cottrell precipitator is used. Cottrell precipitator uses principle of electrophoreses (movement of colloidal particles under influence of electric field) to weed out smoke particles. Air containing smoke and dust particles are allowed to pass through metal electrodes present inside Cottrell precipitator. These charged particles moves towards oppositely charged electrodes and get deposited there from which they are scrapped mechanicalSewage disposalDirt and mud particles are electrically charged. By applying electric field in sewage tank, dirt particles reach the oppositely charged electrode, get neutralized and are coagulated. These coagulated particles are suspended in solution and are easily removed. Artificial rainColloids find another application in producing artificial rain. Cloud consists of charged particles of water dispersed in air. These particles are neutralized by spraying oppositely charged particles over a cloud. These neutralized particles of water combine to form large water drops. Thus, artificial rain is caused by the aggregation of minute particles of water to form large particles.
Suspension different from a colloid solution?
They are different b/c suspensions have particles that do not settle down.
Differentiate dispersion method from condensation method?
In the preparation of colloids, using the dispersion method, larger particles of the substance are broken down into much smaller parts. Using the condensation method, smaller particles are dispersed and condensed to colloidal size.
Is colloidal silver toxic?
Pure colloidal silver is not toxic. Colloidal means very small subatomic particle down to the atom. But follow the recommended dose for your amount of ppm.
How would mixture of different sized rock particles settle to the bottom?
These particles were broken away from rocks by the action of water or wind or a combination of both. Such particles may vary in size from boulders to sand to tiny bits of clay. ... As winds or water currents slow down, rock particles settle on the land or at the bottom of rivers, lakes, and oceans.
In a heterogeneous mixture some particles are big enough and due to the force of gravity they settle down slowly to the bottom of container. Such type of mixture of particles is called as?
The process is called sedimentation.
