SURFACE TENSION & INTERFACIAL  PHENOMENON | PART-1 | INTERFACE | TYPES OF INTERFACE | IMPORTANCE
Channel: PHARMAROCKS THE WAY OF SUCCESS
Date: 16/09/2020

👨🏼‍🏫 INTERFACE
INTERFACE is the boundary between two or more phases  exist together
The properties of the molecules forming the interface are  different from those in the bulk that these molecules are  forming an interfacial phase.
Several types of interface can exist depending on whether  the two adjacent phases are in solid, liquid or gaseous state.

👨🏼‍🏫 INTERFACIAL  TENSION
INTERFACIAL TENSION is the force per unit length existing at the  interface between two immiscible liquid phases and has the units  of dyne/cm.
interfacial tensions are less than surface tensions  because an adhesive forces, between the two liquid phases  forming the interface are greater than when a liquid and a gas  phase exist together.
If two liquids are completely miscible, no interfacial tension exists  between them.

👨🏼‍🏫 SURFACE TENSION [γ] 
Surface tension is defined as the force in dynes, acting on the surface of the liquid at right angles of the length of surface of 1 centimetre.
The units of surface tension are dyne/cm and N/m. 

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