The tendency of a liquid to resist increasing its surface area is called surface tension.
Liquids with stronger intermolecular forces, such as polar liquids, exhibit more surface tension.
Capillary action is the spontaneous rising of liquid in a narrow tube, which occurs due to intermolecular forces. (See image to the left.)
Surface tension causes the liquid to rise, ending with the liquid's surface as a meniscus.
Viscosity measures a liquid’s resistance to flow. It depends on the strength of intermolecular forces and temperature.
High viscosity = thick; stronger IMFs
Low viscosity = thin; weaker IMFs
An example of high viscosity is honey. An Example of low viscosity is milk (actually, most liquids you can consume are low in viscosity).
Earlier we mentioned menisci. A meniscus (plural: menisci) is the curve in the surface of a liquid resulting from attraction to the molecules and the container.
Convex curve on the surface: the molecules are more attracted to each other than to the container.
Concave curve on the surface: the molecules are more attracted to the container than to other molecules
Convex Curve Concave Curve