Question

What are intermole forces?how are these related to the three states of matter?

Answer 1

Intermolecular forces are the attraction forces between molecules which hold them together. the value of intermolecular forces determine the state of matter.

if they are strong then the state of matter is solid

if they are very weak then the state of matter is gas and if they are intermediate then state of matter is liquid.

Answer 2

The force which attracts the particles of an object is called Intermole force.

in solid it is high 
in liquid it is medium
in gas it is low