colloidal

/kə'loukwiəl/

Thân thiện

A scientist prepares a colloidal suspension in a beaker.

Definition

1. Adjective:
   • Of, relating to, or having the properties of a colloid: Describes a state of matter where microscopically dispersed particles are suspended throughout another substance.

Usage

• The term "colloidal" is used to describe mixtures, solutions, or systems that are in a colloidal state. It is a technical adjective commonly used in chemistry, physics, and materials science.

Examples

• Adjective:
  • Milk is a common example of a colloidal suspension of fat droplets in water.
  • The colloidal silver solution is claimed to have antibacterial properties.
  • The stability of the colloidal system depends on the particle size and surface charge.

Advanced Usage

• "Colloidal dispersion": A system where colloidal particles are distributed in a continuous medium.
  • The paint is a colloidal dispersion of pigment particles in a liquid.
• "Colloidal stability": The resistance of a colloid to aggregation or sedimentation.
  • Scientists study surfactants to improve the colloidal stability of pharmaceutical formulations.

Variants and Related Words

• Colloid (n): A homogeneous, non-crystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance. Colloids include gels, sols, and emulsions.
  • A gel is a type of colloid where a solid is dispersed in a liquid.
• Colloidally (adv): In a colloidal manner.
  • The particles are colloidally stable under these conditions.

Synonyms

• Dispersed: Distributed or spread throughout a medium.
• Suspended: (In a scientific context) Held within a fluid without dissolving.

Related Phrases

• Colloidal chemistry: The branch of chemistry concerned with colloids and their phenomena.
  • Her research is in the field of colloidal chemistry.
• Colloidal particle: A particle small enough to remain suspended in a medium by Brownian motion.
  • The size of a colloidal particle typically ranges from 1 to 1000 nanometers.

Học thuật

Adjective

1. of or relating to or having the properties of a colloid