DIFFERENCE BETWEEN COHESION AND ADHESION.

MOVEMENT OF MOLECILES WAS FIRST OBSETVED BY THE BOTANIST,

DRY ICE IS SOLID _

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Solution

DIFFERENCE BETWEEN COHESION AND ADHESION.

Sr.no Adhesion Cohesion

1. Adhesion is the force of attraction between two dissimilar molecules or substances Cohesion is the force of attraction between two similar substances or molecules

2. A best example for adhesion is the force of attraction lying between the walls of xylem vessels and the water molecules An example for the cohesion forces is the force of attraction between the water molecules

3. Capillary action and meniscus (the curved surface which is formed by any liquid in a cylinder) are the effects of adhesion Surface tension, meniscus and capillary action are the effects of cohesion

4. Adhesion is the result of electrostatic or mechanical forces between two kinds of different substances. Cohesion is caused mainly due to the Van der Waals forces and hydrogen bonding

5. A stronger force of adhesion tends the liquid to spread over the surface A strong force of cohesion tends to form water droplets on the surface.

MOVEMENT OF MOLECILES WAS FIRST OBSETVED BY THE BOTANIST,__Robert Brown

DRY ICE IS SOLID of frozen carbon dioxide(Co2).

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