Is There a Relationship Between Viscosity and Density?

By Staff WriterLast Updated Apr 2, 2020 12:26:04 AM ET

There is no relationship between the viscosity and density of a fluid. While viscosity is the thickness or thinness of a fluid, density refers to the space between its particles. However, both properties are affected by temperature. When a fluid is heated, its particles move far apart, and it also becomes less viscous.