Is viscosity a chemical change

Answer 1

Viscosity changes when another agent is added to a fluid. For example, paint has a fairly thick viscosity and if intending to apply it using a spray gun, one would need to add thinners, varsol, or turpentine to the paint to thin it out so that it will pass through the gun. Thus changing the viscosity.

Answer 2

Viscosity is nor a change, it is a property.

A physical property.

Answer 3

It changes by rising temperatures and lowering temperatures.

Higher temperature= Less viscosity (resistance)

Lower temperature= More viscosity (resistance)

Answer 4

Both. It could be categorised as physical chemistry. Physics studies the phenomenon in macroscopic terms, and chemists explain the cause of viscosity on a molecular level.