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The amount of heat required to vaporize one gram of a liquid at its boiling point with no change in temperature. Usually expressed in J/g. The molar heat of vaporization is the amount of heat required to vaporize one mole of liquid at its boiling point with no change in temperature and usually expressed ion kJ/mol.

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Electrochemistry

Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.

Metallurgy

Refers to the overall processes by which metals are extracted from ores.

Dubnium

Discovered : at both Berkeley, California, USA, and Dubna, near Moscow, Russia in 1970. Description:A highly radioactive metal which does not occur naturally, and of which only a few atoms have ever been made. It is of research interest only. Origin:The element is named after the Russian town of Dubna.

Conjugate Acid-base Pair

In Bronsted-Lowry terminology, a reactant and product that differ by a proton, H+.

Oxidation Numbers

Arbitrary numbers that can be used as mechanical aids in writing formulas and balancing equations, for single- atom ions they correspond to the charge on the ion, more electronegative atoms are assigned negative oxidation numbers (also called Oxidation states).

Standard Reaction

A reaction in which the numbers of moles of reactants shown in the balanced equation, all in their standard states, are completely converted to the numbers of moles of products shown in the balanced equation, also sall at their standard state.

Biodegradability

The ability of a substance to be broken down into simpler substances by bacteria.

 

Mother Nuclide

Nuclide that undergoes nuclear decay.

Avogadro's Law

At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.

Activity Series

A listing of metals (and hydrogen) in order of decreasing activity.