👉 Fluid, often used interchangeably with "liquid," refers to a substance that flows easily and takes the shape of its container. Unlike solids, which maintain a fixed form and volume, fluids adapt to their surroundings, allowing them to fill any space they are placed in. This characteristic is due to the weak intermolecular forces between fluid molecules, which enable them to move past one another. Common examples of fluids include water, oil, and air; they can be easily poured, splashed, or spread out, and their volume can change based on external conditions like temperature and pressure. Fluids play a crucial role in various natural processes and human activities, from the movement of water in rivers to the functioning of engines in machines.
