A Dust Particle Floating on a Water Surface Illustrates

Question

A dust particle floating on a water surface illustrates
A) surface tension.
B) chemical tension.
C) static electricity.
D) heat capacity.
E) hydrophilic attraction.

Accepted Answer

The dust particle floating on the water surface demonstrates surface tension, which is the cohesive force between water molecules at the surface. The arrangement of molecules at the water-air interface allows the dust particle to be held up by the surface tension, instead of sinking.