Final answer:
Liquid mixtures that contain materials that do not intermix are called immiscible.
Step-by-step explanation:
When immiscible liquids are poured into the same container, separate layers are formed. For example, gasoline, oil, benzene, carbon tetrachloride, and some paints are immiscible with water.
The distinction between immiscibility and miscibility is one of extent. Miscible liquids are of infinite mutual solubility, while immiscible liquids have very low (though not zero) mutual solubility.