The Magic of Surface Tension: A Journey Into the World of Water Molecules

What makes a paperclip float on the surface of water?

Is it due to the weight of the paperclip or is there something more fascinating happening?

Answer:

The paperclip floats on the surface of water due to the high surface tension of the water.

Explanation:

Surface tension is a remarkable property of water that allows small objects, like the paperclip, to float on its surface. This phenomenon occurs because of the cohesive forces between water molecules at the surface.

When the student adds a drop or two of dish soap to the water, the soap molecules disrupt the cohesive forces of water molecules. As a result, the surface tension of water decreases, causing the paperclip to sink.

This experiment showcases the delicate balance of forces at play in the molecular world of water. By understanding surface tension, we gain insights into the behavior of liquids and the interactions between molecules.