Question

1. what is surface tension?
2. give one example of surface tension in action that is not in the article?
3. what is the only liquid with greater surface tension than water?

Explanation:

1. Surface tension is the property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of its molecules.
2. An example of surface - tension in action not in the article could be a water strider walking on the surface of a pond. The water strider's legs are designed in a way that they do not break the surface tension of the water, allowing it to walk on the surface.
3. Mercury is a liquid with greater surface tension than water. This is because the cohesive forces between mercury atoms are stronger than the cohesive forces between water molecules.

Answer:

1. Surface tension is the property of a liquid's surface to resist external force due to molecular cohesion.
2. A water strider walking on a pond is an example of surface - tension in action not in the article.
3. Mercury is a liquid with greater surface tension than water.