What is the density of tap water and how can a property such as density be used to identify an unknown substance?
As liquids go, water is exceptionally dense, a property attributable to hydrogen bonding, and the strong intermolecular forces that exist between water molecules. Most organic solvents will float on water, and thus necessarily have
The density of mercury metal is
If you have a table of densities, sometimes you can identify the substance if you measure its density. Usually, there are other more convenient means of identification.