CHEMISTRY GLOSSARY

Results 21–30 of 49 for oktanski broj

lignite → lignit

Lignite is a geologically young, low-grade brownish coal of relatively poor heat-generating capacity, used usually as a fuel.

molasses → melasa

Molasses is a thick brown liquid, byproduct while producing sugar. It is used for the production of ethanol, rum and concentrated stock food.

Nessler’s reagent → Nesslerov reagens

Nessler’s reagent is a solution of mercury(II) iodide (HgI₂) in potassium iodide and potassium hydroxide named after the German chemist Julius Nessler (1827-1905). It is used in testing for ammonia, with which it forms a brown coloration or precipitate.

radical → radikal

Radical is a reaction intermediate where a bond is broken and the two parts of the molecule exist carrying a single unshared electron. The radicals are normally destroyed quickly by recombination or they break into another radical and a stable molecule.

sand → pijesak

Sand is loose particles of hard, broken rock or minerals, with a diameter of between 0.02 mm and 2 mm. Sand is the most common form of silica used in making glass.

decomposition → raspadanje

Decomposition occurs when chemical compounds are broken up into simple molecules, and even as far as their original elements. These processes are normally irreversible. An example of decomposition is when ammonium nitrate is heated. This produces nitrous oxide and water which are unable to recombine.

Na₃AlO₃ + 3 H₂O

NH₄NO₃ →← 2H₂O + N₂O

diamond → dijamant

Diamond is the hardest known mineral (with a hardness of 10 on Mohs’ scale). It is an allotropic form of pure carbon that has crystallised in the cubic system, usually as octahedral or cubes, under great pressure. Diamond crystals my be colourless and transparent or yellow, brown or black. They are highly prized as gemstones, but also have extensive uses in industry, mainly for cutting and grinding tools. Diamonds occur in ancient volcanic pipes of kimberlite, or in river deposits that have been derived from weathered kimberlite. Industrial diamonds are being increasingly synthetically produced.

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Einstein, Albert → Einstein, Albert

Albert Einstein (1879-1955) is a German born American physicist, who took Swiss nationality in 1901. A year later he went to work in the Bern patent office. In 1905. he published five enormously influential papers, one on Brownian movement, one on the photoelectric effect, one on the special theory of relativity, and one on energy and inertia (which included the famous expression E = mc²). In 1915 he published the general theory of relativity, concerned mainly with gravitation. In 1921 he was awarded the Nobel Prize. In 1933, as a Jew, Einstein decided to remain in the USA (where he was lecturing), as Hitler had come to power. For the remainder of his life he sought a unified field theory. In 1939 he informed president Roosevelt that an atom bomb was feasible and that. Germany might be able to make one.

tar → katran

Tar is a brown or black bituminous material, liquid or semi-solid in consistency, gained as a product of dry distillation of natural fuels like wood, or other organic materials.

terminal → terminalni

Terminal in chemistry means: the end of a polymer molecule and a point at which electron connections can easily be made or broken.

Citing this page:

Generalic, Eni. "Oktanski broj." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.