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27 Σεπ 2022 · Colloids are classified as foams, aerosols, emulsions, gels, or sols, depending on the nature of the dispersed phase and dispersion medium. Familiar examples of colloids include mayonnaise, milk, fog, smoke, and gelatin. A gel is a colloid of solid particles in a liquid medium.
A colloidal solution typically consists of particles ranging in size from 1 nanometer to 1 micrometer. These particles can be solid, liquid, or gas. Unlike true solutions where solute particles are dissolved at a molecular level, colloidal particles remain suspended in the dispersion medium without settling down due to gravity, thus forming a ...
A colloid can be distinguished from a true solution by its ability to scatter a beam of light, known as the Tyndall effect. Hydrophilic colloids contain an outer shell of groups that interact favorably with water, whereas hydrophobic colloids have an outer surface with little affinity for water.
Colloids are uniform mixtures that don't separate or settle out. While colloidal mixtures are generally considered to be homogeneous mixtures, they often display heterogeneous quality when viewed on the microscopic scale. There are two parts to every colloid mixture: the particles and the dispersing medium.
Describe the composition and properties of colloidal dispersions. List and explain several technological applications of colloids. As a child, you may have made suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water, known as tempera paint.
13 Νοε 2022 · Learning Objectives. Summarize the principal distinguishing properties of solutions, colloidal dispersions, and suspensions. For the various dispersion types (emulsion, gel, sol, foam, etc.), name the type (gas, liquid, or solid) of both the dispersed phase and the dispersions phase.
29 Οκτ 2019 · Solutions, suspensions, colloids, and other dispersions are similar but have characteristics that set each one apart from the others. A solution is a homogeneous mixture of two or more components. The dissolving agent is the solvent. The substance that is dissolved is the solute.
