# The viscosity of liquids _________ with increase in temperature.

The viscosity of liquids decreases with increase in temperature.

## What is Viscosity?

Viscosity is defined as the measure of the resistance of a fluid to gradual deformation by shear or tensile stress. To put it another way, viscosity refers to a fluid’s resistance to flow.

• Viscosity is measured in Pascal seconds (Pa s).
• If the speed of the sphere is less, the viscosity will be more.
• The more viscous a fluid is, the more resistance it offers to any object moving inside it.
• Although all liquids have a certain value of viscosity, the for liquids is generally considered as high or low, keeping the viscosity of water as a benchmark.
• When a liquid is heated, the kinetic energy of its molecules increases and the intermolecular attraction becomes weaker. Hence, the viscosity of a liquid decreases with increase in its temperature.

Example:

Honey is thicker than water and, as a result, honey is more viscous than water.