What does colloidal mean?

Question

In the subject chemistry you have three types of mixtures you have suspension, colloidal and solution. i am trying to find out what colloidal means

Answer 1

In general, a colloid or colloidal dispersion is a substance with components of one or two phases. A colloid mixture is a heterogeneous mixture where very small particles of one substance are distributed evenly throughout another substance. A colloid mixtures particles are between 1 nm and 1000 nanometers in diameter. Typical membranes restrict the passage of dispersed colloidal particles more than they restrict the passage of dissolved ions or molecules; i.e. ions or molecules may diffuse through a membrane through which dispersed colloidal particles will not. The dispersed phase particles are largely affected by the surface chemistry existent in the colloid.

Many familiar substances, including butter, milk, cream, aerosols (fog, smog, smoke), asphalt, inks, paints, glues, and sea foam are colloids. This field of study was introduced in 1861 by Scottish scientist Thomas Graham.

Answer 2

A colloid mixture is a heterogeneous mixture where very small particles of one substance are distributed evenly throughout another substance.