What is an example of an heterogeneous mixture?
Milk is heterogenous meaning made of different parts.
The mixture of milk has distinct parts that do not form even temporary bonds or electro static attractions as in a solution.
Milk is made of water, calcium, various other minerals such as magnesium, and fat molecules. The fat molecules are suspended in the mixture, the random motion of the molecules ( Brownian motion) keeps the fat molecules suspended.
Cursing the milk allows the fat molecules ( cream) to rise to the surface, upsetting the molecular motion of the suspension allowing the fat molecules to leave the mixture.