F. Define the following terms: 1. Winnowing 2. Distillation 3. Centrifugation 4. Crystallisation 5. Miscible liquids 6. Chromatography
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Answer:
1. Winnowing term is used for the separation of grains from straw with the help of wind. It is the simplest form that involves throwing the mixture into the air so that the wind can blow the lighter chaff away.
2. Distillation is the process in which water vapours converts into volatile liquids and separate through selective boiling. ... This technique is useful in obtaining a pure liquid from non-volatile impurities or to raise the absorption of the specific component in a mixture.
3.Centrifugation is a process in which the centrifugal force is applied to separate particles from a solution on the basis of their density, size, shape and viscosity of the medium.
4.Crystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.
5. Miscible liquids are liquids which have the ability to mix with each other without any chemical reaction needed but physical reaction is required. Miscibility refers to the ability of a liquid to completely dissolve in another liquid solution.
6. Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a system on which a material called the stationary phase is fixed.