Colloids

Whenever we consider a liquid, the behaviour of its surface molecules and the rest are entirely different. For example, if you place a small needle on the water’s surface, it will sink to the bottom of the water container. On the other hand, a leaf will float on the surface instead. Such kind of behaviour […]

When you put a straw into a glass of water, the water rises over the straw. It is even higher than the water level in the glass. This is capillary action. The intermolecular attraction between water molecules and the adhesive force between the capillary walls and the liquid generate capillary motion. Further, there are many