Amphiphilic molecules are unique compounds that possess both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts. This dual nature allows them to interact with both water and oils, making them essential in various biological and chemical processes. Common examples include phospholipids, which are key components of cell membranes, and surfactants, used in cleaning products to reduce surface tension. When amphiphilic molecules are placed in water, they tend to arrange themselves into structures like micelles or liposomes. In these formations, the hydrophilic heads face outward towards the water, while the hydrophobic tails are shielded from it. This behavior is crucial for processes such as emulsification and drug delivery.