CHEMISTRY GLOSSARY

law of chemical equilibrium    →   zakon o kemijskoj ravnoteži

Law of chemical equilibrium (also called the law of mass action) states that the rate at which a substance reacts is proportional to its active mass (i.e. to its molar concentration). Thus, the velocity of a chemical reaction is proportional to the product of the concentration of the reactants.

reaction mechanism    →   reakcijski mehanizam

Reaction mechanism is a list of all elementary reactions that occur in the course of an overall chemical reaction.

average rate of reaction    →   prosječna brzina reakcije

Average rate of reaction is calculated in a way that a total change of reactants and products concentration is divided with time which is needed for reaction to end.

addition reactions    →   reakcije adicije

Addition reactions are normally occur with unsaturated compounds and involve the addition of one molecule (called the reactant) across the unsaturated bond (i.e. the double bond or the triple bond) of another molecule (called the substrate) to give a single product, formed by the combination of both reacting molecules.

For example, bromine adds across the double bond of ethene in an addition reaction to form dibromoethane.

chemical cleaning    →   kemijsko čišćenje

Chemical cleaning is a removal of fatty and other impurities combined with it from fabrics with the help of organic solvents.

chemical element    →   kemijski element

Chemical element is a type of matter of which elementary matter is composed. Chemical element is composed of atoms with the same core charge.

chemical engineering    →   kemijsko inženjerstvo

Chemical engineering is the branch of engineering that is concerned with the design, construction and operation of the plants and machinery used in industrial chemical processes.

chemical glass    →   kemijsko staklo

Chemical glass is a special, resilient glass used in production of chemical vessels; it is composed of quartz and boron, barium, zinc and aluminium oxides.

chemical property    →   kemijsko svojstvo

Chemical property is a property observed when a substance undergoes a transformation into one or more new substances. Measurement of a chemical property involves a chemical change. For example, determining the flammability of petrol involves burning it, producing carbon dioxide and water.

chemical raw material    →   kemijske sirovine

Chemical raw material are petroleum fractions used for obtaining organic chemicals, those are mostly refined gas and petroleum or fraction parts of petrol.