Final answer:
Liquids that can mix in any proportion and form a homogeneous solution are called miscible, like the mix of ethanol and water. Imiscible liquids, such as oil and water, do not mix and form separate layers in a container.
Step-by-step explanation:
When two or more liquids can dissolve into each other in all proportions, they are referred to as miscible. An example of miscible liquids includes ethanol and water. This indicates that they form a single homogeneous phase when combined, contrary to immiscible liquids like oil and water, which do not mix and remain as separate layers when poured into the same container.
Partially miscible substances make a solution only in certain proportions. For instance, n-butanol can mix with water up to a specific limit. Beyond their solubility limits, solutions can be either unsaturated or saturated. An unsaturated solution can still dissolve more solute, whereas a saturated solution cannot dissolve additional solute.