Question

Explain surface tension and surface energy

Answer 1

Answer:

Explanation:

Surface energy quantifies the disruption of intermolecular bonds that occurs when a surface is created.  It is also called as surface free energy or interfacial free energy. In simple language, surface energy can be defined as the work per unit area done by the force that creates the new surface

Have you ever tried drowning an ant? Doesn’t work, does it? They seem to be body sliding across the water’s surface till they safely reach solid ground. But that doesn’t make sense because their breathing mechanism is kind of located in the underbelly!

They aren’t body sliding. They are just walking across just like how they would do on land except with a different manoeuvring technique. They are able to do this because of the phenomenon known as surface tension. Because of cohesive forces across liquid molecules, surface tension causes the existence of a thin film (layer) across the surface. Surface energy is the work done per unit area to produce this new surface. And if the insect is light enough, to not damage (cause brittle failure to) the layer, it can use the thin layer as support to walk across

Answer 2

Surface tension :- The tangential force per unit length acting

at right angles on either side of a line imagined to be drawn on

the free liquid surface in equilibrium is called surface tension

the free surface of a liquid behaves like a stretched elastic

membrane or restrictive rubber sheet the free surface of a

liquid is in the state of tension

Surface energy :- The additional potential energy due to the

molecular forces for unit surface area is called surface energy

$\\ \boxed{\small\mathsf\red{surface \: energy \: = \: \frac{potential \: energy \: due \: to \: molecular \: forces}{surface \: area}} }$

The free surface of liquid contained molecules. These

molecules in the surface film experience resultant downward

force. Due to which the molecules process additional potential

energy