1-A solution is a homogeneous mixture.
2-The particles in a solution are extremely small.It is less than 1 nm in diameter (1 nm=10∧-9 m)
3-These particles can not see even with a micro scope.
4-A true solution does not scatter light.
5-Solutions are very Stable.
6-The particles of solute present in a solution can not be separated by filtration.