Liquids are characterized by their ability to flow and conform to the shape of their container. While possessing a fixed volume at a given temperature and pressure, they lack an inherent form. A quantity of water, for instance, will take the shape of a glass, a bottle, or a puddle, demonstrating this adaptability.
This characteristic fluidity is fundamental to numerous natural processes and technological applications. It facilitates nutrient transport in biological systems, enables hydraulic mechanisms in engineering, and is essential to many chemical reactions. The absence of a rigid structure distinguishes liquids from solids, impacting their behavior under various conditions.