~(c) – When water is allowed to drip slowly from a water tap, the shape of each small drop is spherical.
- When mercury spills on a glass sheet, it forms spherical droplets.
- Soap bubbles are spherical in shape. - Insects (water - skaker) area able to walk across a water surface etc.
- Toy duck on liquid
- A flowing or floating needle on water.

(d) The adhesion of water molecules to glass molecules is stronger than the cohesion between water molecules. Hence, when water spills on a clean glass surface it spreads and wets the glass. On the other hand, the cohesion between mercury molecules is greater than the adhesion between mercury and glass molecules. Therefore when mercury spills on glass it forms small spherical droplets on larger flattened drops
(e) By adding
- detergent/soap
- alcohol
- oil
- By heating the liquid/increasing the temperature of the liquid
- adding camphor.
~(d) The adhesion of water molecules to glass molecules is stronger than the cohesion between water molecules. Hence, when water spills on a clean glass surface it spreads and wets the glass. On the other hand, the cohesion between mercury molecules is greater than the adhesion between mercury and glass molecules. Therefore when mercury spills on glass it forms small spherical droplets on larger flattened drops
(e) By adding
- detergent/soap
- alcohol
- oil
- By heating the liquid/increasing the temperature of the liquid
- adding camphor.
~(e) By adding
- detergent/soap
- alcohol
- oil
- By heating the liquid/increasing the temperature of the liquid
- adding camphor.
