A colloidal mixture contain particles with dimension under 1 000 nm.
This is a colloidal mixture.
A mixture in which particles are suspended in a solution is called a suspension. Suspensions are heterogeneous mixtures, where the particles are not fully dissolved and can settle out over time.
When particles are suspended in a viscous (thick) mixture. Lots of oatmeal based lotions are colloidal.
In science, there are three types of mixtures. These mixture types are, suspension mixture, colloidal mixture and a solution.
Homogenised milk is a homogeneous colloidal dispersion of the milk solids in the liquid milk. The colloidal particles are sized as per the requirements in high-speed colloidal mills. It is not a heterogeneous mixture.
A colloidal suspension is neither a mixture nor a solution.
A colloidal mixture is a type of mixture where one substance is dispersed in another substance in the form of tiny particles or droplets. These particles are larger than individual molecules but small enough that they do not settle out of the mixture over time. Examples include fog, milk, and gelatin.
This is a colloidal mixture, such as milk, the mixture though not made of soluble solids, colloidal solids are actually held in suspension in the solvent (water, alcohol, or oil) and do not readily precipitate from the fluid.
sand and water.
A substance with particles too large to dissolve is called a suspension. In a suspension, the particles are visible and do not completely dissolve in the solvent, often settling out over time. Examples include sand in water or muddy water.
Butter is a colloidal solution as it shows Tyndall effect. Tyndall effect is scattering of beam of light by the particles of colloidal solution. The dispersed phase in butter is liquid and dispersion medium is solid. The colloidal solution is always a part of heterogeneous mixture. Therefore, Butter is a heterogenous mixture.
A salad with different ingredients like lettuce, tomatoes, and croutons would be considered a heterogeneous mixture on a microscopic level because you can see the individual components separately.