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27 Σεπ 2022 · In chemistry, a colloid is a mixture of tiny particles that are dispersed in another medium. The particles are microscopic in size, ranging from 1 nanometer (nm) to 1 micrometer (μm) in diameter. In contrast, particles in a solution are smaller than this size, while particles in a suspension are larger.
21 Νοε 2023 · A colloid is a compound where particles of intermediate size are mixed into, and do not fall out of, a solution and cannot be filtered out except through methods such as centrifugation.
12 Αυγ 2019 · The colloid particles are solids or liquids that are suspended in the medium. These particles are larger than molecules, distinguishing a colloid from a solution. However, the particles in a colloid are smaller than those found in a suspension.
iv. Soap solutions have small osmotic pressure because the soap molecules aggregate to form micelles of colloidal dimensions. v. Although the osmotic pressure of colloidal solutions is very small, it has immense biological importance in providing the driving force for the passage of water and other substances through cell membranes.
Colloids are mixtures of two or more substances where one substance is dispersed within another. The dispersed substance is referred to as the “dispersed phase”.
14 Αυγ 2020 · An oncotic pressure similar to plasma will permit replacement of plasma volume without distribution to other fluid compartments and this is the key element that makes a solution a colloid solution. Table 7.3: The Properties of an Ideal Colloid
Colloid solutions used in intravenous therapy belong to a major group of volume expanders, and can be used for intravenous fluid replacement.
