Surface tension

The tension of a liquid's surface, due to the attraction of the liquid's molecules to each other. Liquids with a high surface tension are not attracted to other materials with which they have contact. For example, mercury will form beads if spilt onto a tile floor. Liquids with a low surface tension are attracted to other materials and will therefore be seen to 'soak' them.

Source: GreenFacts

Español: Tensión superficial

Mercury