Meniscus in water and capillary action

DouniaDaniels 2,963 views 9 slides Aug 25, 2017
Slide 1
Slide 1 of 9
Slide 1
1
Slide 2
2
Slide 3
3
Slide 4
4
Slide 5
5
Slide 6
6
Slide 7
7
Slide 8
8
Slide 9
9

About This Presentation

✔Here is a Water, acids, and bases course, where you will get introduced to the topic of Meniscus in water and capillary action. Terms such as concave and convex meniscus, adhesion, cohesion, capillary action, and polarity will be discussed. But don't worry, you won't get overloaded with t...


Slide Content

Meniscus in water and capillary action

Meniscus The meniscus is the curve in the upper surface of a liquid close to the surface of the container or another object, caused by surface tension. It can be either concave or convex , depending on the liquid and the surface. - Wikipedia.

Concave vs convex A concave meniscus occurs when the particles of the liquid are more strongly attracted to the container ( adhesion ) than to each other ( cohesion ), causing the liquid to climb the walls of the container...Conversely, a convex meniscus occurs when the particles in the liquid have a stronger attraction to each other than to the material of the container. - Wikipedia.

Water molecules Silicon Oxide molecules POLARITY - electronegativity difference between the atoms in a molecule.

Polarity matters!

Adhesion and cohesion Adhesion is the tendency of dissimilar particles or surfaces to cling to one another - Wikipedia . Cohesion or cohesive attraction or cohesive force is the action or property of like molecules sticking together, being mutually attractive - Wikipedia .

Resources: "Meniscus (liquid)". Wikipedia, The Free Encyclopedia. Date retrieved: 25 August 2017 14:04 UTC < https://en.wikipedia.org/wiki/Meniscus_(liquid) > "Adhesion". Wikipedia, The Free Encyclopedia. Date retrieved: 25 August 2017 14:18 UTC < https://en.wikipedia.org/wiki/Adhesion > "Cohesion (chemistry)". Wikipedia, The Free Encyclopedia. Date retrieved: 25 August 2017 14:19 UTC < https://en.wikipedia.org/wiki/Cohesion_(chemistry) >