11 Questions
What is the main cause of interfacial tension between two immiscible liquids?
Imbalance of forces
Where does the contact angle occur?
Against the solid
What is the relationship between interfacial tension and surface tension?
Interfacial tensions generally lie between the surface tensions of the two liquids
What does wetting involve?
Displacement of either a liquid or gas from a surface by a second liquid
What occurs when a drop of liquid is placed on a flat, smooth horizontal surface?
It may spread completely or form a drop
Define interface.
Boundary between two phases.
What is surface tension?
Force acting parallel to the surface and at right angles to a line of 1 m length.
How is surface free energy defined?
Work required to increase the surface area by 1 m2.
What is the unit of surface tension?
N m-1.
Explain the symbol ɤL/V.
Surface tension between a liquid and its vapour.
How are interfacial phenomena in liquids usually considered?
In terms of surface tension.
Learn about interfaces, surface tension, and interfacial tension between different phases such as liquid/liquid, liquid/vapour, solid/vapour, and solid/liquid. Understand the symbols used to denote surface tension and interfacial tension in the context of surface and interfacial phenomena.
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