Here's why:

* Amphi means "both" in Greek.

* Philic means "loving" and pathic means "suffering" (referring to the different types of interactions).

Amphiphilic molecules have:

* A polar region (hydrophilic) that interacts favorably with polar solvents like water.

* A non-polar region (hydrophobic) that interacts favorably with non-polar solvents like oil.

Examples of amphiphilic molecules:

* Phospholipids: The building blocks of cell membranes. They have a polar head group (phosphate) and a non-polar tail (fatty acids).

* Soaps and detergents: They have a polar head that can dissolve in water and a non-polar tail that can dissolve grease.

* Amino acids: Some amino acids have both polar and non-polar side chains.

Important note: While amphiphilic molecules have both polar and non-polar regions, they are not considered to be "both polar and non-polar" in a strict sense. They exhibit different polarities in different parts of the molecule.