Unit 2a Bonding

Ionic bonding

when two atoms form an ionic compound through the "trading" of electrons. For example Na + Cl -> NaCl this happens because Na has one valence electron and Cl has 7 valence electrons. Na gives away its electron to Cl making both stable

Ionic Valence

The number of electrons lost or gained by an atom to form an ion. It is the charge an ion has.

ionic solids

solids which are composed of ions; they generally have high melting points

Ionic dissociation

the process of separating a solute into individual ions in a solution

Covalent Bonding

a bond that results from the sharing of electron pairs between two atoms. usually takes place between a nonmetal and a nonmetal

molecule

Two or more atoms bonded together

bond energy

the energy required to break a chemical bond

molecular formula

A chemical formula that shows the number and kinds of atoms in a molecule

molecular solids

Solids that are composed of molecules held together by their intermolecular forces. weak bonds

Covalent solids

atoms held together by covalent bonds. High melting points.

molecular dissociation

the process by which a molecule splits into its component atoms

covalent ionization

ONLY ACIDS AND AMMONIA

A chemical process by which the molecules of a compound react with water to produce ions. The solution will conduct electricity.

polar covalent bond

A covalent bond in which electrons are not shared equally

pure covalent bond

neutral atoms held together by equally shared electrons

polyatomic ion

A charged group of covalently bonded atoms