Results for “Covalent Bond”
20 terms
Covalent Bond
A bond formed when two atoms share one or more pairs of electrons so that both achieve a stable configuration.
Chemical Bonding & Molecular StructurePolar Covalent Bond
A covalent bond in which the shared electrons are unequally distributed because the bonded atoms differ in electronegativity.
Chemical Bonding & Molecular StructureBond Polarity
The degree of unequal electron sharing in a covalent bond, arising from an electronegativity difference between the bonded atoms.
Chemical Bonding & Molecular StructureCoordinate Bond
A covalent bond in which both shared electrons are supplied by the same atom.
Biochemistry & Polymer ChemistryCross-Linking
The formation of covalent bonds between separate polymer chains.
Atomic Structure & PeriodicityElectronegativity
The relative tendency of an atom in a covalent bond to attract the shared pair of electrons towards itself.
Foundations of ChemistryMolecule
An electrically neutral group of two or more atoms held together by covalent bonds, acting as the smallest unit of a covalent substance.
Organic ChemistryNucleophile
An electron-rich species that donates a pair of electrons to form a new covalent bond.
Chemical Bonding & Molecular StructurePi Bond
A covalent bond formed by the sideways overlap of parallel p orbitals, with electron density above and below the internuclear axis.
Biochemistry & Polymer ChemistryPolymer
A large molecule built from many repeating structural units joined by covalent bonds.
Chemical Bonding & Molecular StructureSigma Bond
A covalent bond formed by the head-on overlap of atomic orbitals, with electron density concentrated along the internuclear axis.
Chemical Bonding & Molecular StructureValence Bond Theory
The bonding model in which a covalent bond forms by the overlap of half-filled atomic orbitals on adjacent atoms.
Atomic Structure & PeriodicityAtomic Orbital
A mathematical function describing the region around a nucleus where an electron of given energy is most likely to be found.
Foundations of ChemistryAtomicity
The number of atoms present in one molecule of an element.
Atomic Structure & PeriodicityChalcogens
The group 16 elements — oxygen, sulfur, selenium, tellurium and polonium — collectively known as the ore-forming elements.
Chemical Bonding & Molecular StructureIntermolecular Forces
The comparatively weak attractions acting between separate molecules rather than within them.
Organic ChemistryOrganic Chemistry
The study of the structure, properties, composition and reactions of carbon-containing compounds.
Biochemistry & Polymer ChemistryThermoplastic
A polymer that softens on heating and hardens again on cooling, reversibly and repeatedly.
Foundations of ChemistryWater of Crystallisation
Water molecules chemically bound within the crystal lattice of a hydrated salt in a fixed stoichiometric ratio.
Chemical Bonding & Molecular StructureChemical Bond
The attractive force that holds atoms or ions together in a stable chemical species.