why water has low viscosity when it has high intermolecular forces between its molecules?

2 ANSWERS

1. amomipais82
   

   Hi,
   Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or extensional stress. In everyday terms (and for fluids only), viscosity is "thickness." Thus, water is "thin," having a lower viscosity, while honey is "thick," having a higher viscosity. Viscosity describes a fluid's internal resistance to flow and may be thought of as a measure of fluid friction. For example, high-viscosity magma will create a tall, steep stratovolcano, because it cannot flow far before it cools, while low-viscosity lava will create a wide, shallow-sloped shield volcano. Put simply, the less viscous something is, the greater its ease of movement (fluidity).  All real fluids (except superfluids) have some resistance to stress, but a fluid which has no resistance to shear stress is known as an ideal fluid or inviscid fluid. The study of viscosity is known as rheology.

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2. paafamily
   

   Kindly download the following PDF file, it contains a lots of information.
   
   http://colloid.stfx.ca/chem100s/Presentations/Intermolecular-Forces.ppt
   
   Hope that helps,

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