Difference between Physical Adsorption and Chemical Adsorption

Physical Adsorption:

Physisorption or Physical adsorption is a sort of adsorption that happens to most particles in contact with a liquid or solid surface.

Chemical Adsorption:

Adsorption is the adhering of a molecule to a surface. The adhering can be permanent, but usually with chemicals or, simply heating the surface can be reversed, it is complex to leave or break the surface of the particles, depending on whether the particle is physically or chemically absorbed.

Here are some points of difference between physical adsorption and chemical adsorption. 

Physical Adsorption	Chemical Adsorption
Particles are held because of the forces of vanderwaal's.	Molecules are held because of the forces of the chemical bond.
It doesn’t necessitate any activation energy.	It necessitates any activation energy.
This is a reversible process.	This is an irreversible process.
No surface compounds are formed in this process.	Surface compounds are formed in this process.
Usually, it is faster at lower temperatures and reduces with a rise in temperature.	Can be at a high temperature
In physical adsorption, on the surface of adsorbent form multilayer.	In chemical adsorption, form a unimolecular layer.
This is not very specific.	This is not highly specific.
The range of adsorption is almost related to the ease of gas.	There is no such correlation in this process.

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