Question

Distinguish between liquid and vapour (or gas) states of matter on the basis of following factors:
a) Arrangement of molecules
b) Intermolecular separation
c) Intermolecular force, and
d) Kinetic energy of molecules.

Answer 1

States of matter
Following are the three states of matter:
$\left(i\right)$ Solid
$\left(ii\right)$ Liquid
$\left(iii\right)$ Gaseous

	Liquid	Gas
Arrangement of molecules	Liquids are loosely packed, with no regular arrangement	Gases are very loosely packed, with no regular arrangement
Intermolecular separation	More space between molecules than solids	More space between molecules than liquid
Intermolecular force	Low inter-molecular force between molecules	Very Low inter-molecular force between molecules
Kinetic energy of molecules	Liquid molecules have high K.E.	Gas molecules have very high K.E.