A colloid is a mixture in which one substance, consisting of microscopically dispersed insoluble particles, is suspended throughout another substance. Some definitions specify that the particles must be …

Sep 27, 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.

A colloid is also a heterogeneous mixture, but the particles of a colloid are typically smaller than those of a suspension, generally in the range of 2 to about 500 nm in diameter. Colloids include fog and …

Nov 25, 2025 · Colloid, any substance consisting of particles substantially larger than atoms or ordinary molecules but too small to be visible to the unaided eye. Colloidal systems may exist as dispersions …

A colloid, or a colloidal solution, is a mixture consisting of molecules or particles dispersed in solution. Unlike the other two primary types of mixture, solutions and suspensions, colloids contain particles …

What are colloids. Learn its properties, types, and applications. Check out a few examples of colloid fluids.

: a mixture (as smoke) consisting of a colloid together with the medium in which it is dispersed

Sep 2, 2025 · A colloid is a specific type of mixture where microscopically dispersed insoluble particles are suspended throughout another substance. The defining characteristic lies in the size of these …

Dec 1, 2025 · A colloid is a heterogeneous mixture of particles that are intermediate in size between those of a solution and a suspension. The Tyndall effect is the scattering of light by colloidal particles.

The term “colloid”—from the Greek words kolla, meaning “glue,” and eidos, meaning “like”—was first used in 1861 by Thomas Graham to classify mixtures such as starch in water and gelatin.