explain the following terms used for separation of mixtures : ( 1 ) filtration ( 2 ) crystallisation ( 3 ) evaporation ( 4 ) sublimation
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Sublimation is another one of these phase transitions; except in this case, we have a solid turning directly into a gas. As a sublimating material changes from a solid to a gas, it never passes through the liquid state. This image shows water in its three forms: ice, water, and steam. Sublimation is just one of the ways water or another substance can change between its potential phases.
filtration:Filtration is a process used to separate solids from liquids or gases using a filter medium that allows the fluid to pass, but not the solid. The term "filtration" applies whether the filter is mechanical, biological, or physical. The fluid that passes through the filter is called the filtrate. The filter medium may be a surface filter, which is a solid that traps solid particles, or a depth filter, which is a bed of material that traps the solid.
crystallisation:Crystallization is the solidification of atoms or molecules into a highly structured form called a crystal. Usually, this refers to the slowprecipitation of crystals from a solutionof a substance.
evaporation:Evaporation is the process by which water changes from a liquid to a gas or vapor. Water boils at 212 degrees F (100 degrees C), but it actually begins to evaporate at 32 degrees F (0 degrees C); it just occurs extremely slowly. As the temperature increases, the rate of evaporation also increases.
filtration:Filtration is a process used to separate solids from liquids or gases using a filter medium that allows the fluid to pass, but not the solid. The term "filtration" applies whether the filter is mechanical, biological, or physical. The fluid that passes through the filter is called the filtrate. The filter medium may be a surface filter, which is a solid that traps solid particles, or a depth filter, which is a bed of material that traps the solid.
crystallisation:Crystallization is the solidification of atoms or molecules into a highly structured form called a crystal. Usually, this refers to the slowprecipitation of crystals from a solutionof a substance.
evaporation:Evaporation is the process by which water changes from a liquid to a gas or vapor. Water boils at 212 degrees F (100 degrees C), but it actually begins to evaporate at 32 degrees F (0 degrees C); it just occurs extremely slowly. As the temperature increases, the rate of evaporation also increases.
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(a) Filtration : The process of separating solid particles from a liquid by allowing it to pass through a filter paper is called filtration.
(b) Crystallization : Evaporation of liquid from a homogeneous liquid-solid mixture and collecting solid in the form of crystals is called crystallization.
(c) Evaporation : Is the process of converting a liquid into its vapour state either by exposing it to air or by heating.
(d) Sublimation : The process in which a solid change directly into its vapours on heating is called sublimation.
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