Fluidity is a measure of a fluid's ability to flow. The more fluid a substance is, the easier it is for it to flow. Fluidity is determined by several factors, including temperature, viscosity, and density.

2. Viscosity

Viscosity is a measure of a fluid's resistance to flow. The more viscous a fluid is, the more difficult it is for it to flow. Viscosity is caused by the interaction of the molecules in the fluid.

3. Density

Density is a measure of the amount of mass in a given volume of fluid. The more dense a fluid is, the more mass it has per unit volume. Density is determined by several factors, including temperature, pressure, and composition.