Atomic Combinations Flashcards
(13 cards)
Chemical bond
A mutual attraction between two atoms resulting from the simultaneous attraction between the nuclei and outer electrons
Covalent bond
The sharing of electrons between two atoms to form a molecule
Molecule
A group of two or more atoms covalently bonded and that function as a unit
Bonding pair
A pair of electrons that is shared between two atoms in a covalent bond
Lone pair
A pair of electrons in the valence shell of an atom that is not shared with another atom
Electronegativity
A measure of the tendency of an atom in a molecule to attract the bonding electrons
Bond energy
The energy needed to break one mole of its molecule into separate atoms
Bond length
The average distance between the nuclei of two bonded atoms
Intermolecular forces
Forces between molecules
Intramolecular forces
Forces between atoms
Boiling point
The temperature of a liquid at which its vapour pressure equals the external atmospheric pressure
Melting point
The constant temperature at which a solid, given sufficient heat, becomes a liquid
Vapour pressure
The pressure exerted by a vapour of equilibrium with its liquid in a closed system
