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960 terms · page 23 of 40
Levelling Effect
The tendency of a solvent to reduce all acids or bases stronger than its own ionised forms to the same effective strength.
Chemical Bonding & Molecular StructureLewis Structure
A diagram showing the bonding and lone pairs of a molecule using dots or lines for valence electrons.
Acids, Bases & SaltsLewis Theory
The theory defining an acid as an electron pair acceptor and a base as an electron pair donor.
Inorganic & Coordination ChemistryLigand
An ion or molecule that donates one or more electron pairs to a central metal atom.
Inorganic & Coordination ChemistryLigand Field Theory
The refined bonding model that combines crystal field theory with molecular orbital treatment of metal–ligand covalency.
Solutions & Colligative PropertiesLike Dissolves Like
The empirical rule that substances dissolve best in solvents with similar polarity and bonding character.
Analytical Chemistry & SpectroscopyLimit of Detection
The smallest concentration of analyte that can be reliably distinguished from the blank.
Analytical Chemistry & SpectroscopyLimit of Quantitation
The lowest concentration at which the analyte can be measured with acceptable precision and accuracy.
Electrochemistry & RedoxLimiting Molar Conductivity
The molar conductivity of an electrolyte extrapolated to infinite dilution, where ionic interactions vanish.
Stoichiometry & Chemical ReactionsLimiting Reagent
The reactant that is completely consumed first and therefore determines the maximum amount of product obtainable.
Chemical Bonding & Molecular StructureLinear Geometry
A molecular shape in which the bonded atoms lie on a straight line, giving a bond angle of 180°.
Inorganic & Coordination ChemistryLinkage Isomerism
Isomerism arising when an ambidentate ligand bonds to the metal through different donor atoms.
Biochemistry & Polymer ChemistryLipid
A biomolecule that is largely non-polar and therefore insoluble in water but soluble in organic solvents.
States of Matter & Gas LawsLiquefaction of Gases
The conversion of a gas into a liquid by cooling below its critical temperature and applying pressure.
States of Matter & Gas LawsLiquid Crystal
A state of matter that flows like a liquid but retains some of the molecular ordering of a crystal.
States of Matter & Gas LawsLiquid State
The state of matter with a definite volume but no fixed shape, in which particles are close together yet free to move past one another.
Electrochemistry & RedoxLithium-Ion Battery
A rechargeable cell in which lithium ions shuttle between a graphite anode and a metal oxide cathode.
Biochemistry & Polymer ChemistryLock and Key Model
The model proposing that the substrate fits a rigid, precisely shaped active site as a key fits a lock.
Chemical Bonding & Molecular StructureLondon Dispersion Forces
Attractions between molecules caused by instantaneous fluctuations in electron distribution inducing dipoles in neighbours.
Chemical Bonding & Molecular StructureLone Pair
A pair of valence electrons localised on one atom and not involved in bonding.
Inorganic & Coordination ChemistryLow Spin Complex
A complex in which electrons pair in the lower d orbitals rather than occupying the upper set.
Nuclear & RadiochemistryMagic Numbers
Particular numbers of protons or neutrons that give a nucleus exceptional stability.
Inorganic & Coordination ChemistryMagnetic Moment of Complexes
The magnetic behaviour of a complex, determined by the number of unpaired electrons it contains.
Atomic Structure & PeriodicityMagnetic Quantum Number
The quantum number mₗ that specifies the spatial orientation of an orbital relative to an applied magnetic field.