What property of water allows the paper clip to float on top of it? explain
a
Viscosity
b
Vapor pressure
c
Surface tension
d
Boiling point
c) Surface tension
Surface tension is the property of a liquid that allows it to resist external forces, primarily at its surface. Water has a high surface tension due to its strong cohesive forces between water molecules. This cohesive force creates a "skin" or "film" at the surface of the water, which enables certain objects, like a paper clip, to float on top of it.
When a paper clip is placed on the surface of the water, the water molecules underneath the clip are attracted to each other and form a slightly elevated surface around the edges of the paper clip. This creates a surface tension that supports the weight of the paper clip and allows it to float.
However, it's important to note that the surface tension of water is not infinite, and there is a limit to the weight or size of an object that can float on its surface.