Results for “pH”
291 terms · page 9 of 13
Racemic Mixture
An equimolar mixture of two enantiomers, which shows no net optical rotation.
Nuclear & RadiochemistryRadioactive Decay Series
A sequence of successive radioactive decays leading from a long-lived parent to a stable end product.
Nuclear & RadiochemistryRadiocarbon Dating
A dating technique that determines the age of organic material from its residual carbon-14 content.
Stoichiometry & Chemical ReactionsReactant
A starting substance that is consumed during a chemical reaction.
Analytical Chemistry & SpectroscopyRedox Titration
A titration in which the reaction between titrant and analyte involves electron transfer.
Solutions & Colligative PropertiesRelative Lowering of Vapour Pressure
The fractional reduction in a solvent's vapour pressure caused by dissolving a non-volatile solute.
Atomic Structure & PeriodicityRutherford Model
The nuclear model of the atom, in which a tiny dense positive nucleus is surrounded by orbiting electrons in mostly empty space.
Acids, Bases & SaltsSalt
An ionic compound formed when the hydrogen of an acid is replaced by a metal or other cation.
Acids, Bases & SaltsSalt Hydrolysis
The reaction of a salt's ions with water to produce an acidic or alkaline solution.
Nuclear & RadiochemistryScintillation Counter
A detector in which radiation causes a material to emit flashes of light that are counted and measured.
Thermochemistry & ThermodynamicsSecond Law of Thermodynamics
The total entropy of the universe increases in every spontaneous process.
Electrochemistry & RedoxSecondary Cell
A cell whose reaction can be reversed by an applied current, allowing it to be recharged and reused.
Biochemistry & Polymer ChemistrySecondary Structure
Local regular folding patterns of a polypeptide backbone stabilised by hydrogen bonds.
Inorganic & Coordination ChemistrySecondary Valence
In Werner's theory, the non-ionisable valence corresponding to the coordination number, satisfied by ligands in fixed spatial positions.
Chemical EquilibriumSelective Precipitation
The separation of ions from a mixture by adding a reagent that precipitates them one at a time.
Acids, Bases & SaltsSelf-Ionisation of Water
The reaction in which two water molecules transfer a proton to give a hydronium and a hydroxide ion.
Foundations of ChemistrySI Base Units
The seven defined units of the International System from which every other measurement unit is derived.
Nuclear & RadiochemistrySievert
The SI unit of equivalent dose, weighting absorbed dose by the biological damage the radiation type causes.
Inorganic & Coordination ChemistrySlag
The molten by-product formed when a flux combines with the gangue during smelting.
States of Matter & Gas LawsSolid State
The state of matter in which particles are held in fixed positions, giving a definite shape and volume.
Stoichiometry & Chemical ReactionsSolubility Rules
A set of empirical guidelines predicting whether an ionic compound will dissolve appreciably in water.
Solutions & Colligative PropertiesSolution
A homogeneous mixture in which one or more substances are dispersed uniformly at the molecular or ionic level in another.
Solutions & Colligative PropertiesSolvent
The component of a solution present in the greater amount, which dissolves and disperses the solute.
Thermochemistry & ThermodynamicsStandard Molar Entropy
The absolute entropy of one mole of a substance in its standard state at 298 K.