Cohesion and Adhesion.
Why can a cup be lifted by taking hold of the handle?
Because the particles of the cup do not separate from each other.
What is the power which holds these particles together called?
It is called Cohesion.
In what bodies is cohesion the strongest?
Cohesion is strongest in solid bodies.
Is the cohesion alike in all solids?
No; the cohesion in iron is much greater than the cohesion in wood.