Question

The work required to increase the surface area
by 1 cm2 is known as:
(a)
Vapour pressure
b)
Osmosis
(c)
Surface energy
(d)
Viscosity​

Answer 1

The work required to increase the surface area by 1 cm² is known as Surface energy.

Explanation:

• Atoms are normally stable and have a balanced set of bonds/interactions in the bulk form of a material.
• Surface atoms, on the other hand, will have an incomplete, imbalanced set of interactions, resulting in imbalanced bonding energy.

• Surface energy is the work done to raise or extend the surface area by 1 cm² .

• In the SI system, surface energy is measured in ergs per cm² or joules per m².

         Surface energy = Work per cm² = (Force × length) cm²