WHY does temperature affect viscosity?
The resistance of a liquid to flow is called its viscosity. Viscous liquids like syrup and shampoo flow slowly. Less viscous liquids like water and gasoline flow quickly. The viscosity of a liquid usually depends on its temperature. Viscosity generally decreases as the temperature increases. Viscosity generally increases as the temperature decreases.As the temperature increases the average kinetic energy of the molecules in a liquid increases. The greater average kinetic energy of the molecules more easily overcomes the attractive forces that tend to hold the molecules together.
