What is the surface tension?

At surface of a liquid will their will be no forces (forces by molecules) acting on molecules in opposite directions such that the net force between molecules (only at surface) will be zero? If exists how surface area of a liquid contracts?

In the light of above concept let me explain a simple thing that is the inter-molecular attractions are there in between the particles. In case of liquids the particles are free to move in bulk as the particle is equally attracted from all sides. but in case of particles present on the surface, they are attracted from the is the particle is attracted inwards. And thus there is a tension on it also called surface tension.

Diagram showing the surface tension on the particle near the surface

It is evident from the above diagram that the particle near the surface is having a inward pull due to the attraction of inner particles.

but on the other hand the particle shown in the depth is getting attracted from all the sides thus all forces nullify each other and particle do not feel any attraction or tension.

Published by Ankush Sharma

I am M.Sc (chemistry ) from Punjabi University Patiala. I am a science teacher with expertise in chemistry, with 8 years of experience in teaching. Writing and blogging is my hobby, I write whenever I am free. I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge.

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