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960 terms · page 22 of 40
Isotope Dilution Analysis
A quantitative technique in which a known amount of labelled isotope is added and the resulting dilution measured.
Analytical Chemistry & SpectroscopyIsotopic Peak
A peak appearing at a higher mass than the main ion because the molecule contains a heavier isotope.
Foundations of ChemistryIUPAC Nomenclature
The systematic naming rules issued by the International Union of Pure and Applied Chemistry that assign each substance one unambiguous name.
Inorganic & Coordination ChemistryIUPAC Nomenclature of Complexes
The systematic rules for naming coordination compounds unambiguously.
Inorganic & Coordination ChemistryJahn–Teller Distortion
The geometric distortion of a complex that removes an electronic degeneracy and lowers its overall energy.
States of Matter & Gas LawsJoule–Thomson Effect
The temperature change of a real gas when it expands through a throttle without exchanging heat or doing external work.
Organic ChemistryKetone
A compound containing a carbonyl group bonded to two carbon atoms.
Chemical Kinetics & CatalysisKinetic and Thermodynamic Control
The distinction between a reaction giving the product that forms fastest and one giving the product that is most stable.
States of Matter & Gas LawsKinetic Molecular Theory
The model that explains gas behaviour in terms of large numbers of tiny particles in constant random motion.
Thermochemistry & ThermodynamicsKirchhoff's Law
The relation describing how the enthalpy change of a reaction varies with temperature.
Electrochemistry & RedoxKohlrausch's Law
At infinite dilution, the molar conductivity of an electrolyte is the sum of independent contributions from its cations and anions.
Inorganic & Coordination ChemistryLabile and Inert Complexes
The kinetic classification of complexes according to how rapidly they exchange their ligands.
Chemical Kinetics & CatalysisLangmuir Adsorption Isotherm
A model describing monolayer adsorption on a surface with a fixed number of equivalent, independent sites.
States of Matter & Gas LawsLatent Heat
The energy absorbed or released when a substance changes state, with no accompanying change in temperature.
Chemical Bonding & Molecular StructureLattice Energy
The energy released when one mole of an ionic solid is formed from its constituent gaseous ions.
Foundations of ChemistryLaw of Conservation of Mass
The principle that the total mass of the substances in a closed system is unchanged by any chemical reaction.
Foundations of ChemistryLaw of Definite Proportions
The principle that a given chemical compound always contains its constituent elements in the same fixed mass ratio.
Chemical EquilibriumLaw of Mass Action
The principle that the rate of a reaction is proportional to the product of the active masses of the reactants.
Foundations of ChemistryLaw of Multiple Proportions
The principle that when two elements form more than one compound, the masses of one element combining with a fixed mass of the other are in…
Nuclear & RadiochemistryLaw of Radioactive Decay
The principle that the rate of decay is proportional to the number of undecayed nuclei present.
Stoichiometry & Chemical ReactionsLaw of Reciprocal Proportions
The principle that the mass ratios in which two elements combine with a third are related by a simple ratio to the ratio in which they…
Chemical EquilibriumLe Chatelier's Principle
When a system at equilibrium is disturbed, it responds in the direction that partially opposes the disturbance.
Inorganic & Coordination ChemistryLeaching
The selective dissolution of a metal or its compound from an ore using a suitable chemical reagent.
Electrochemistry & RedoxLead–Acid Accumulator
A rechargeable cell using lead and lead dioxide electrodes in sulfuric acid.