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Topic Content:
- Meaning of Cohesion
- Meaning of Adhesion
- The Reason Water Wets Glass
- Reason Why Mercury Does Not Wet Glass
What is Cohesion?
Cohesion is the force of attraction that exists between molecules of the same substance e.g. the force of attraction between molecules of water (water and water).
What is Adhesion?
Adhesion is the force of attraction between molecules of different substances. e.g. the force attraction between water and a glass surface.
Cohesion and adhesion, as defined above, explain the different actions of water and mercury when spilt on a clean glass surface.
The Reason Water Wets Glass:
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