Definition of substitution. 1  1a : the act, process, or result of substituting one thing for anotherb : replacement of one mathematical entity by another of equal value. 2  2 : one that is substituted for another.
Homogenized milk is any sort of milk that has been mechanically treated to ensure that it has a smooth, even consistency. The homogenization process typically involves high temperatures, agitation, and filtration, all aimed at breaking down milk's naturally occurring fat molecules.
Is milk a homogenous or heterogenous mixture? Milk is a heterogeneous mixture, and it shows Tyndall effect.   Milk comes out of the cow as a heterogeneous mixture. Milk processers remove some of the components, like crâ¦eam, to make butter and other milk products. Then they homogenize the rest so that when you buy it from the store, it is homogeneous.