There's no set formula for 'dust'. It depends on what kind of dust it is.
i think it is a suspension
Why is dust a homgenous mixture
They are suspensions and pollutants.
Sometimes They are in a a homogeneous mixture such as salt water or brass but are not in a heterogeneous mixture such as mud or oily water.
Steel Iron carbide or just plain carbide.
The type of mixture bleach is (NaOCI) Is a homogeneous mixture.
If the mixture is completely homogeneous, then the mixture is true solution as in thesolution the solute particles are completely dissolved and have uniform composition.These are transparent.A colloid is a type of mixture in which one substance is dispersed evenly throughout another. These are mostly translucent, for example:-milk.A suspension is most easy to identify since the solute particles do not dissolve in the solution. They either keep floating in the solution or settle down at the bottom.
Perfume is considered a type of mixture. It is a homogeneous mixture since it is made of different chemicals that are mixed into one consistent form.
A sandstorm is a mixture of sand particles, dust and wind. Heavier sand particles are found closer to the ground and lighter dust particles higher up. A violent sandstorm can be tens of kilometers wide, several hundred meters tall and can last for several days.
HOMOGENEOUS
A plastic bead mixture.
This is a colloidal mixture.
mixtures which are made of different types of particles........
Heterogeneous
Smoke. The general term for a suspension of either liquid or solid particles in a gas is "aerosol."
Dust is mainly discarded human skin scales and other debris. Dust mites are very tiny spider type scavengers that recycle dust particles into editable food. They recycle so well that they can actually continue to eat what other dust mites have expelled.
This is a mixture solid-liquid or solid-gas.
Sometimes They are in a a homogeneous mixture such as salt water or brass but are not in a heterogeneous mixture such as mud or oily water.
A colloid is a type of homogeneous mixture. In this type of mixture, one substance is divided into insoluble particles and dispersed into another substance.
As stated elsewhere on this site, an aerosol is a suspension of particles within a gas. A good example of a aerosol is smog, cigarette fumes or any type of dust cloud. Our everyday air has thousands of particles suspended in it. Many of these are man-made, though typically they are naturally present.