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.
Ocean Salinity. As mentioned before 96.5% of the ocean is water. The other 3.5% is salinity. Salinity is the total amount of dissolved solids (in grams) in 1000 grams (1 kg) of water, and is described as parts per thousand.These solids form ions (charged molecules) because of interactions between lattices and water molecules.he other 3.5% is salinity. Salinity is the total amount of dissolved solids (in grams) in 1000 grams (1 kg) of water, and is described as parts per thousand.