Nomenclature

Nomenclature

HC2H3O2Acetic Acid

C2H3O2-acetate ionForms of Chemical BondsThere are 3 forms bonding atoms:Ioniccomplete transfer of 1 or more electrons from one atom to another (one loses, the other gains)Covalentsome valence electrons shared between atomsMetallic holds atoms of a metal together

Most bonds are somewhere in between ionic and covalent.NAMING COMPOUNDSYour ability to name compounds and write formulas hinges on your ability to recognize whether a compound is Ionic or Molecular.

COMPOUNDS FORMED FROM IONS

CATION + ANION ---> COMPOUNDNa+ + Cl- --> NaCl

A neutral compound requires equal number of + and - charges.Naming Monatomic IonsMonatomic cations are identified simply by the elements name.Examples:K+ is called the potassium cationMg2+ is called the magnesium cation

Naming Monatomic IonsFor monatomic anions, the ending of the elements name is dropped, and the ending ide is addend to the root name. Examples:F- is called the fluoride anionN3+ is called the nitride anion

Monatomic Ions

Two Types of CompoundsSmallest pieceMelting PointStateTypes of elementsFormula UnitMoleculeMetal and NonmetalNonmetalssolidSolid, liquid or gasHigh >300CLow