CHEMISTRY GLOSSARY
polyvalent element → polivalentni elementi
Polyvalent element is a molecule which having more than one valence, for example oxygen is a divalent in H2O, nitrogen is a trivalent in NH3, carbon is a tetravalent in methane (CH4).
Moh’s scale → Mohsova skala
Mohs’ scale of mineral hardness characterises the scratch resistance of various minerals through the ability of a harder material to scratch a softer. It was created by the German mineralogist Friedrich Mohs (1773-1839). Mohs based the scale on the ten readily available minerals.
| Hardness | Mineral |
|---|---|
| 1 | talc (Mg3Si4O10(OH)2) |
| 2 | gypsum (CaSO4·2H2O) |
| 3 | calcite (CaCO3) |
| 4 | fluorite (CaF2) |
| 5 | apatite (Ca5(PO4)3(OH-,Cl-,F-)) |
| 6 | orthoclase feldspar (KAlSi3O8) |
| 7 | quartz (SiO2) |
| 8 | topaz (Al2SiO4(OH-,F-)2) |
| 9 | corundum (Al2O2) |
| 10 | diamond (C) |
potassium fertilizer → kalijevo gnojivo
Potassium fertilizers are compounds of potassium used as an artificial manure e.g. potassium-chloride, potassium-sulphate, potassium-magnesium-sulphate, and ashes formed after wood burns out.
potassium-argon dating → kalij-argonsko datiranje
Potassium-argon dating is a process of determining the age of mineral deposits by measuring the proportion between quantity of isotope 40Ar and 40K in mineral deposits.
propagation → propagacija
Propagation is the step in a polymerization mechanism, where new monomer molecules are added to the growing polymer chain in the free radical process.
protein → bjelančevina
Proteins are natural organic compounds of animal or herbal origin, essential in diet. They are natural polymers developed from a crowd of interconnecting monomers of amino acids, with relative molecular masses amounting up to a few million.
Citing this page:
Generalic, Eni. "OFICINAVIRTUAL.ISSSTE.GOB.MX." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
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