Water drops on the hydrophobic surface of grass. In chemistry, hydrophobicity is the physical property of a molecule (known as a hydrophobe) that is seemingly repelled from a mass of water. (Strictly speaking, there is no repulsive force involved; it is an absence of attraction.) In contrast, hydrophiles are attracted to water.
Ocean salinity is generally defined as the salt concentration (e.g., Sodium and Chlorure) in sea water. It is measured in unit of PSU (Practical Salinity Unit), which is a unit based on the properties of sea water conductivity. It is equivalent to per thousand or (o / 00) or to g/kg.
The table below provides information on the variation of solubility of different substances (mostly inorganic compounds) in water with temperature, at 1 atmosphere pressure.Units of solubility are given in grams per 100 grams of water (g/100g), unless shown otherwise. The substances are listed in alphabetical order.In general, substances have to be exposed under boiling point for a short while to fully dissolve.nits of solubility are given in grams per 100 grams of water (g/100g), unless shown otherwise. The substances are listed in alphabetical order. In general, substances have to be exposed under boiling point for a short while to fully dissolve.