Question

a homogeneous material which contains particles of one kind and has definite properties

Answer 1

You need example.
None another WE HUMANS.. We are made up of same particle of same kind.. More precisely baryonic matter is a homogeneous mixture with same properties as they constitute atoms in them.

Answer 2

No,homogenous mixture are completely disolved and cannot be separated by simple methods ex.sugar solution ,oil mixtures,soda water