The second section presents the views andassumptions of realism in conducting research in social science. The main realistic attacks onlogical positivism approach are presented in the third section and the conclusion is given in thefourth section.
Water is considered 'the' universal solvent because more materials are dissolved by it than by any other solvent but it will not dissolve non-polar substances like oil.
A very important solvent in nature and biology is water. Aqueous solutions are solutions containing water as the solvent. Many solutes can dissolve in water, and that is why water is the universal solvent. When a solution is formed, forces between particles in the solute and in the solvent are overcome. At the same time, new attractive forces are formed. The forces that are formed in a solution must be a similar strength as the forces overcome in the solute and solvent.