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12 Αυγ 2019 · 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.
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.
Colloids may involve virtually any combination of physical states (gas in liquid, liquid in solid, solid in gas, etc.), as illustrated by the examples of colloidal systems given in Table 11.4. Examples of Colloidal Systems. Table 11.4. Preparation of Colloidal Systems.
In this chapter, we will consider the nature of solutions, and examine factors that determine whether a solution will form and what properties it may have. In addition, we will discuss colloids—systems that resemble solutions but consist of dispersions of particles somewhat larger than ordinary molecules or ions.
27 Σεπ 2022 · Familiar examples of colloids include mayonnaise, milk, fog, smoke, and gelatin. A gel is a colloid of solid particles in a liquid medium. A sol consists of liquid particles in a solid medium. An emulsion is a colloid formed by two or more liquids. A foam forms by gas particles trapped within a liquid or solid.
13 Νοε 2022 · 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.
Figure 1. (a) A solution is a homogeneous mixture that appears clear, such as the saltwater in this aquarium. (b) In a colloid, such as milk, the particles are much larger but remain dispersed and do not settle.
