CHEMISTRY GLOSSARY

crystal water    →   kristalna voda

Crystal water is water contained in certain salt crystals. It can be removed by heating. Crystals that contain crystal water are called hydrated and their salts hydrates.

mineral water    →   mineralna voda

Mineral water is a groundwater that rises to the surface through a natural opening in the earth or rock and contains a relatively high concentration of mineral ions and trace of elements which can be radioactive or thermal.

composition of ocean water    →   sastav oceanske vode

The proportions of the major constituents of ocean water are almost constant throughout the world. Salinity (total salt content) and the concentrations of individual chemical constituents in sea wateris given the units psu (practical salinity units). For most purposes one can assume that the new unit, psu, and the older unit, ‰, are synonymous.

The average composition of the ocean water is as shown on the following table.

non-water solution    →   nevodena otopina

Non-water solution is a solution in which the solvent is not a water (usualy non-polar).

deionised water    →   deionizirana voda

Deionised water is water from which ionic salts have been removed by ion-exchange. It is used for many purposes as an alternative to distilled water.

soft water    →   meka voda

Soft water is any water that does not contain large concentrations of the dissolved minerals calcium or magnesium.

standard mean ocean water    →   standardna prosječna oceanska voda

Standard mean ocean water (SMOW) is a standard sample of pure water of accurately known isotopic composition which is maintained by the International Atomic Energy Agency. It is used for precise calibration of density and isotopic composition measurements.

waste water    →   otpadna voda

Waste waters are waters which pour down from housing, public or industrial plants and are polluted with mineral and organic substances and microorganisms.

water purification    →   pročišćavanje vode

Water purification is a procedure of harmful substances removal in order to obtain pure drinking-water.

water softener    →   omekšivač vode

Water softeners are substances which help remove constant water hardness. It reacts with calcium and magnesium salts, creating compounds that do not react with soap.