colloid

(noun)

A stable system of two phases, one of which is dispersed in the other in the form of very small droplets or particles.

Related Terms

Examples of colloid in the following topics:

  • Hydrophilic and Hydrophobic Colloids

    • A hydrophilic colloid, or hydrocolloid, is defined as a colloid system in which the colloid particles are hydrophilic polymers dispersed in water.
    • A hydrophobic colloid, or emulsion, is defined as a colloid system where the particles are hydrophobic polymers.
    • Since the colloid does not interact with the aqueous solvent, hydrophobic colloids are inherently unstable and generally do not form spontaneously.
    • In order for the emulsion to stay stable, additional substances are needed to stabilize the colloid.
    • An emulsifier is a substance that stabilizes the colloid so that it does not change significantly with time.

  • Medical Solutions: Colligative Properties

    • Discuss the importance of colloidal properties in the use of medical solutions

  • Terpenes

    • It occurs as a colloidal suspension called latex in a number of plants, ranging from the dandelion to the rubber tree (Hevea brasiliensis).

  • Substances and Mixtures

    • Mixtures take the form of alloys, solutions, suspensions, and colloids.