👉 Fluids, encompassing both liquids and gases, undergo distinct phases characterized by varying degrees of order and molecular interaction. In liquids, molecules are closely packed and move relatively slowly, sharing a fixed volume but maintaining a definite shape. This results in properties like surface tension and viscosity. Gases, on the other hand, have molecules that are far apart and move rapidly in all directions, occupying the entire volume of their container and expanding to fill it. Transitions between phases occur due to changes in temperature or pressure, affecting molecular kinetic energy and intermolecular forces.
