It is called a suspension, and it may be either homogeneous or non-homogeneous.
It is the same everywhere and in all directions.
collection of dissimilar type of data is called non homogeneous data structure as for example structure .
Bakelite is optically isotropic.
Aluminium and steel are e.g. of isotropic materials.
No
The meaning of "dissolved" is that a material (solute) form a homogeneous solution.Suspended material float in a liquid but is not soluble; it is a non-homogeneous mixture.
An isotropic material has properties which are independent of the direction in which they are measured whereas in an anisotropic material the properties do depend on the direction .
For elastic, isotropic and homogeneous materials, zero Poisson's ratio means that the material doesn't present lateral deformation on bending, compressing or extending.
yes
In an isotropic material, a stress in one direction cannot cause a shear stress. In non-isotropic materials it is possible; though an explanation of the equations involved is not realistic via this medium.
Concrete is an isotropic material with different strength properties with respect to the type of imposed loadings.