Quasi-solid
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Quasi-solid, false-solid, or partial-solid , or semi-solid are terms for a substance which is not clearly a solid or a liquid. While similar to solids in some respects, such as having the ability to support their own weight and hold their shapes, a quasi-solid also shares some properties of liquids, such as conforming in shape to something applying pressure to it and the ability to flow under pressure.[citation needed] The words quasi-solid, partial-solid, and partial-liquid are used interchangeably. The term "semi-solid" is sometimes used interchangeably with these terms but is not a correct term, as "semi" means two equal halves.[citation needed]
Quasi-solids and partial-solids are sometimes described as amorphous because at the microscopic scale they have a disordered structure unlike crystalline solids.[citation needed] They should not be confused with amorphous solids as they are not solids and exhibit properties such as flow which solids do not.[citation needed]
Examples
[edit]- Pharmaceutical and cosmetic creams, gels, and ointments,[1] e.g. petroleum jelly, toothpaste, hand sanitizer gel
- Foods, e.g. guacamole, salsa, whipping cream, dessert, jam
See also
[edit]References
[edit]- ^ "2 – Semi-Solids – Visual Encyclopedia of Chemical Engineering Equipment". encyclopedia.che.engin.umich.edu. Retrieved 2023-07-05.
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