Learning objective
Understand the short-range-order model of liquid structure and the features of molecular motion in liquids.
Master the concepts of the surface tension coefficient, surface tension force and surface energy.
Study the laws of wetting, Laplace pressure and capillary phenomena.
Become familiar with monomolecular films, osmotic pressure and vapour pressure over a curved surface.
Expected outcomes
Calculates the surface tension force, surface energy and excess pressure in a bubble.
Finds the height of rise (depression) of a liquid in a capillary using Jurin's law.
Explains the contact angle and the spreading condition.
Estimates osmotic pressure and the increase of vapour pressure over a small droplet.
Activities
Lecture
Lecture · 1 h 20 min ·
required
Problem solving on the topic "Wetting and capillary phenomena"
Practice · 1 h 20 min ·
required
Determination of the surface tension coefficient of liquids by the drop-counting method
Laboratory · 2 h 15 min ·
optional
The phenomenon of surface tension of liquids
Self-study · 6 h ·
optional
Final test
Test · 20 min ·
required
· pass ≥ 70%
Completion conditions
- Lecture
- Problem solving on the topic "Wetting and capillary phenomena"
- Final test — at least 70%