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explain brownian movementwhen you view a sol through an ultra microscope you will observe that colloidal particles appear to be in a state of rapid
properties of sols sol is a solid liquid dispersion with solid or semi-solid particles dispersed in a continuous liquid phase for eg starch in
he recombinant plasmid extracted from the surviving colonies contains a gene called suc2 that codes for convertase an enzyme needed to metabolize
explain sol -gel transformationduring sol -gel transformation a three dimensional network is formed by the interlocking of dispersed particles the
what are the physical propertie of solsols resemble liquids in their main physical properties - that is they flow and they do not show rigidity of
what are sols a colloidal system in which solid particles are dispersed in a liquid is referred to as a sol to distinguish it from a true
specific gravitythe density of a substance is defined as mass per unit volume the density of a substance is a characteristic property and has
viscosityviscosity as you may already know is associated with fluid flow it is the internal friction which tends to bring to rest portions of the
explain osmotic pressureosmosis as you may already know refers to the flow of solvent into a solution or from a more dilute solution to a more
freezing point - properties of solutionsthe freezing point of a material is the temperature at which it changes from a liquid to a solid a liquid
boiling pointthere are certain properties of solutions which are directly connected with vapour pressure and one of it is boiling point you
determine number of sucrose molecules in the solutionwhen a solid is dissolved in a volatile solvent the vapour pressure of the solution is less than
vapour pressurethe intermolecular forces in a liquid prevent most molecules from escaping from the surface however due to molecular collisions some
define the properties of solutionsseveral properties of solutions are particularly important in food preparations amongst these are colligative
explain the concentration of a solution the concentration of a solution is the amount of solute dissolved in a specified amount of solvent or
how can we determine solutionssolutions are a homogeneous mixture of two or more different substances this means that the molecules of the dissolved
environmental factors of viscosity and plasticitya temperature affects the viscosity of a colloid generally its viscosity decreases as the
viscosity and plasticity of colloidal particlevarious degrees of viscosity and plasticity are encountered in colloids viscosity may be described as
what is imbibitionthe ability of colloids to pick up water and swell when they come in contact with water is called imbibitionimbibition is usually
adsorption - colloidal particlecolloidal particles attract and hold to their surfaces the molecules of various gases vapors and other matter with
electric charge - properties of colloidal systemscolloidal particles are electrically charged some colloidal particles carry a positive charge
tyndall effectone of the best ways to distinguish a solution from a colloidal dispersion is to use a strong beam of intense light as the beam passes
what is lyophobicif the affinity of the dispersed phase to go into or to remain in colloidal dispersion is slight the dispersed phase is said to be
explain about lyophilicif the affinity between the dispersed phase and the medium is high the dispersed phase is said to be lyophilic solvent loving
what are the types of colloidal dispersionsdepending upon the relative affinity of the dispersed phase for the dispersion medium colloidal