Answer:
It is necessary that there be differences and similarities between the components of a mixture.
Explanation:
Differences: It is important that there are solubility differences between the components of a mixture.
As similarities they must have, it is necessary to take into account the solubility rule that says "Similar similar dissolves", that is, that polar solutes can only be dissolved in polar solvents and non-polar solvents in non-polar solvents.