Results for “pH”
291 terms · page 11 of 13
Central Metal Atom
The metal atom or ion at the heart of a coordination entity, which accepts electron pairs from the ligands.
Atomic Structure & PeriodicityChalcogens
The group 16 elements — oxygen, sulfur, selenium, tellurium and polonium — collectively known as the ore-forming elements.
Nuclear & RadiochemistryCloud Chamber
A device that reveals the paths of ionising particles as visible trails of condensed vapour.
Atomic Structure & PeriodicityCore Electron
An electron occupying a completely filled inner shell that does not take part in chemical bonding.
Electrochemistry & RedoxCorrosion
The gradual destruction of a metal by electrochemical reaction with its environment.
Thermochemistry & ThermodynamicsCoupled Reactions
Two reactions linked through a shared intermediate so that a favourable one drives an unfavourable one.
Atomic Structure & PeriodicityDiagonal Relationship
The similarity in properties between an element of period 2 and the element one place to its lower right in period 3.
Foundations of ChemistryElement
A pure substance composed entirely of atoms that share the same atomic number and therefore cannot be split into simpler substances by…
Acids, Bases & SaltsEnd Point
The point in a titration at which the indicator changes colour, signalling that the reaction is judged complete.
Stoichiometry & Chemical ReactionsEndothermic Reaction
A reaction that absorbs energy from the surroundings, giving a positive enthalpy change.
Atomic Structure & Periodicityf-Block Elements
The lanthanides and actinides, in which electrons fill the f orbitals of the antepenultimate shell.
Chemical Kinetics & CatalysisFirst-Order Reaction
A reaction whose rate is directly proportional to the concentration of a single reactant.
Chemical Kinetics & CatalysisFree Radical Chain Mechanism
A chain mechanism in which the propagating intermediates are species bearing unpaired electrons.
States of Matter & Gas LawsFrenkel Defect
A point defect in which an ion leaves its lattice site and lodges in a nearby interstitial position.
Inorganic & Coordination ChemistryFroth Flotation
A concentration method that separates minerals by exploiting differences in how readily their surfaces are wetted.
Biochemistry & Polymer ChemistryGlucose
The most abundant monosaccharide and the primary energy source for most living cells.
Stoichiometry & Chemical ReactionsHydration Reaction
The addition of water across a multiple bond or the incorporation of water into a crystal lattice.
Chemical EquilibriumICE Table
A systematic tabulation of Initial, Change and Equilibrium amounts used to solve equilibrium problems.
Solutions & Colligative PropertiesImmiscible Liquids
Two liquids that do not dissolve in one another and separate into distinct layers.
Atomic Structure & PeriodicityMetalloid
An element with properties intermediate between those of metals and non-metals, lying along the periodic table's staircase.
Nuclear & RadiochemistryModerator
A material used in a reactor to slow fast neutrons to energies at which fission is far more probable.
Organic ChemistryNitrile
A compound containing a carbon–nitrogen triple bond.
Atomic Structure & PeriodicityNucleus
The dense, positively charged core of an atom, containing virtually all of its mass in protons and neutrons.
Chemical Bonding & Molecular StructureOdd-Electron Molecule
A species containing an unpaired electron, so that its total electron count is odd and no octet structure is possible.