Αποτελέσματα Αναζήτησης
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.
Colloid is a term that has come to encompass solid particles suspended in a liquid (a colloidal dispersion), microscopic droplets in a liquid (an emulsion), or either solid or liquid phases suspended in a gas (an aerosol).
The table below lists a few examples of colloids. [1,3,6] Preparations. Colloids are created through various techniques, two prominent ones being the condensation method and the dispersion method. [2,6] Condensation Method. The condensation method initiates particle growth from smaller entities.
Solutions are homogeneous mixtures of two or more substances in which the components are present as individual atoms, molecules or ions. The individual components are uniformly distributed and are fare too small to be seen by eye. Liquid and gas solutions do not scatter much light and therefore are transparent (clear).
The document outlines the key properties and types of colloidal solutions, including sols (solid in liquid), gels (liquid in solid), and emulsions (liquid in liquid). Common colloidal solutions like milk, paint and mud are given as examples.
A colloidal solution generally represents a solution system in which the particles comprising that system have a particle size intermediate that of a true solution and a coarse dispersion, roughly ranging between 1nm to 500 nm (or 1nm to 0.5µm).
What is a colloid? Finely-divided dispersion of one phase in another. Size of dispersed (“solute-like”) entity >> ordinary molecules. Example: blood cell in water. Solution. homogeneous particles are molecules. Colloid. size 1–1000 nm. particles remain suspended. Suspension. heterogeneous particles settle out. Examples.
