👉 A fluid, in the context of physics and chemistry, is a substance that takes the shape of its container but not a fixed shape. It flows and can move from areas of high pressure to areas of low pressure, filling any gaps or spaces it encounters. Fluids can be liquids, gases, or even certain states of matter like plasmas, but they all share the characteristic of being able to flow and adapt their volume to their container. Examples include water, air, and oil.
