What is the difference between high and low surface tension and how does it affect the behavior of liquids?

Surface tension is a measure of how strongly the molecules in a liquid are attracted to each other at the surface. High surface tension means the molecules are strongly attracted, creating a strong "skin" on the surface. Low surface tension means weaker attraction, resulting in a more spread-out surface. High surface tension causes liquids to form droplets and have a curved meniscus in a container, while low surface tension allows liquids to spread out more easily and wet surfaces better.