Dispersion colloid is a term used in chemistry to describe a type of colloid where particles are dispersed throughout a solvent. The word "dispersion" is spelled /dɪˈspɜːʃən/ using the International Phonetic Alphabet, which represents the spoken word. The /dɪ/ indicates the sound of "dih", followed by the /ˈspɜː/ indicating "sper", and the /ˈʃən/ indicating "shun". Similarly, the word "colloid" is pronounced /ˈkɒlɔɪd/ with the /ˈkɒ/ indicating "koh", the /lɔɪ/ indicating "loyd", and the /d/ indicating "dih". Understanding the IPA can help with correct pronunciation of scientific terms like "dispersion colloid".
Dispersion colloid refers to a type of colloid in which the dispersed particles are evenly dispersed or distributed throughout a medium or solution. A colloid is a heterogeneous mixture consisting of two phases: a dispersed phase (made up of small particles) and a continuous phase (the medium or solution in which the particles are dispersed). In dispersion colloids, the dispersed phase consists of particles that are uniformly spread out, creating a stable and dispersed system.
The particles in a dispersion colloid can be solid, liquid or gas, but are usually insoluble in the continuous phase. These particles are typically smaller than what can be seen with the naked eye, often on the nanometer or micrometer scale. Examples of dispersion colloids include milk, in which fat globules are dispersed in water, and ink, in which pigment particles are dispersed in a liquid medium.
Dispersion colloids possess unique characteristics that distinguish them from other types of colloids. They tend to be visually homogeneous, appearing uniform to the naked eye, although the particles are not dissolved at the molecular level. The particles in a dispersion colloid do not settle out over time due to the phenomenon known as Brownian motion, in which the particles are continuously moving and colliding with each other, preventing sedimentation.
In conclusion, a dispersion colloid refers to a colloid in which the particles are uniformly dispersed in a medium, forming a stable and visually homogeneous mixture.
• Dispersoid.
• Emulsoid, a colloid, solution in which the substance is in the form of exceedingly minute film-covered droplets, infinitely smaller than those of an emulsion, the solution being more or less viscid.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "dispersion" comes from the Latin word "dispersio", which means "scattering" or "spreading out". It is derived from the verb "dispergere", which combines "dis-" (meaning "apart" or "away") and "spargere" (meaning "to scatter" or "to sprinkle").
The term "colloid" comes from the Greek word "kolla", which means "glue" or "glue-like substance". It was coined by the Scottish chemist Thomas Graham in the 19th century to describe substances that have intermediate properties between those of true solutions and suspensions.
Therefore, the term "dispersion colloid" refers to a colloid in which the dispersed particles are separated or scattered throughout a continuous medium.