👉 A fluid, in the context of physics and chemistry, is a substance that can flow or change shape without breaking into smaller pieces. Common fluids include water, oil, and air. These substances exhibit properties like viscosity (resistance to flow) and surface tension, which influence how they behave in different environments. For instance, water is highly viscous and has a high surface tension, making it essential for life processes and affecting phenomena like capillary action. Understanding fluids is crucial in various fields, from engineering to meteorology.
