CHEMISTRY GLOSSARY
critical point → kritična točka
In general, critical point is the point on the phase diagram of a two-phase system at which the two coexisting phases have identical properties and therefore represent a single phase. At the liquid-gas critical point of a pure substance, the distinction between liquid and gas vanishes, and the vapour pressure curve ends. The coordinates of this point are called the critical temperature and critical pressure. Above the critical temperature it is not possible to liquefy the substance.
critical pressure → kritični tlak
Critical pressure is the pressure of a fluid in its critical point; i.e. when it is at its critical temperature and critical volume.
critical temperature → kritična temperatura
Critical temperature is the temperature of the liquid-vapour critical point, that is, the temperature above which a gas cannot be liquefied by an increase of pressure.
boiling point → vrelište
Boiling point is the temperature at which the vapour pressure of a liquid is equal to the external pressure on the liquid. The standard boiling point is the temperature at which the vapour pressure of a liquid equals standard pressure (101 325 Pa).
boiling point elevation → povišenje vrelišta
Boiling point elevation is an elevation of the boiling point of a solvent is observed when substances are dissolved in it. The amount by which the boiling point is elevated is proportional to the number of molecules of solute and independent of their nature.
critical mass → kritična masa
Critical mass is the minimum mass of a fissionable material (235U or 239Pu) that will initiate an uncontrolled chain reaction as in an atomic bomb. The critical mass of pure 239Pu is about 4.5 kg, and of 235U about 15 kg.
critical volume → kritični volumen
Critical volume is the volume of a fixed mass of a fluid at critical temperature and pressure.
depression of freezing point → snižavanje ledišta
Depression of freezing point of a pure solvent is observed when substances are dissolved in it. The amount by which the freezing point is depressed is proportional to the number of molecules of solute and independent of their nature.
equivalence point → točka ekvivalencije
Eequivalence point is the point in a titration when enough titrant has been added to react completely with the analyte.
flash point → temperatura zapaljenja
Flash point is the lowest temperature at which a liquid or volatile solid gives off vapour sufficient to form an ignitable mixture with the air near the surface of the liquid or within the test vessel (NFPA).
Citing this page:
Generalic, Eni. "Critical point." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
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