👉 A "substantially fluid" refers to a substance that exhibits properties of both liquids and gases, but with characteristics more aligned with liquids. It has a lower density than solids, allowing it to flow and change shape while still maintaining enough cohesion to resist external forces. This fluidity is due to the relatively weak intermolecular forces between its particles, enabling them to move past one another more easily than in a solid but not as freely as in a gas. Examples include water at room temperature, which can flow and take the shape of its container but still retains a degree of cohesion and surface tension.
