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.
Now the molecule also has a bent shape, and angular shape, so that the molecule itself is a polar molecule. As a result, water is an excellent solvent for other polar molecules, particularly those which have hydrogen bonded to either oxygen or nitrogen atoms. This is because it is possible to have hydrogen bonding between the molecules. Water is also an excellent solvent for both positive and negatively charged ions. With a positively charged ion, water molecules can surround the ion with the negative oxygen end nearest the positive charge and with the negative ion, a water molecule can have its positively charged hydrogen end closest to the ion.