CHEMISTRY GLOSSARY

colloid silver    →   koloidno srebro

Colloid silver is a bright blue-green powder which dissolved in water gives colloid solution of red colour.

colorimeter    →   kolorimetar

Colorimeter is an instrument used to measure the strength of colorification in a solution.

colorimetry    →   kolorimetrija

Colorimetry is a quantitative chemical analysis by colour using a colorimeter.

Beer’s law    →   Beerov zakon

Beer’s law (or Beer-Lambert law) is the functional relationship between the quantity measured in an absorption method (A) and the quantity sought, the analyte concentration (c). As a consequence of interactions between the photons and absorbing particles, the power of the beam is attenuated from P_o to P. Beer’s law can be written

where A is the absorbance at a given wavelength of light, ε is the molar absorbtivity or extinction coefficient (L mol^-1 cm^-1), unique to each molecule and varying with wavelength, b is the length of light path through the sample (cm), and c is the concentration of the compound in solution (mol L^-1).

covering power    →   prekrivna moć

Covering power is the ability of a plating solution under a set of specified plating conditions to deposit metal on the surfaces of recesses or deep holes. This term suggests an ability to cover, but not necessarily to build up, a uniform coating.

crystallisation    →   kristalizacija

Crystallisation is process in which the melted substance from a saturated solution turns into solid substance (crystal).

diffusion current    →   difuzijska struja

Diffusion current (i_d) is a current which is limited by the speed of particle diffusion in an electrolyte solution.

digestion    →   digeriranje

Digestion or precipitate ageing happens when freshly formed precipitate are left, usually at a higher temperature, in a solution from which it is precipitated. It results in cleaner and bigger particles.

dilution    →   razrjeđivanje

Dilution is the action of diluting or reducing the strength or concentration of a liquid, usually by the addition of water.

bromine    →   brom

Bromine was discovered by Antoine J. Balard (France) in 1826. The origin of the name comes from the Greek word bromos meaning stench. It is reddish-brown liquid with suffocating, irritating fumes. Gives off poisonous vapour. Causes severe burns. Oxidizer. Bromine occurs in compounds in sea water. It was once used in large quantities to make a compound that removed lead compound build up in engines burning leaded gasoline. Now it is primarily used in dyes, disinfectants and photographic chemicals.