Chemical Names and Formulas Overview •Metals and Non-Metals •Types of Compounds •Writing Names and Formulas
Naming Compounds Tutorial General Information Binary Ionic Compounds Ternary Ionic Compounds/Poly-atomic Ions Naming w/metals that have more than 1 charge (Transition Metals)
Metals and Nonmetals Stairway Of Division on Periodic Table C, P, Se, I, Rn and to the right are non- metals B, Si, As, Ge, Sb, Te, Po, At are semi- metals All others are metals
Ions Cations Positively Charged Atoms i.e. Na+ Anions Negatively Charged Atoms i.e. Cl-
IONIC CHARGES Group I -> Group II -> Group III -> Group IV -> 1+ 2+ 3+ 4+
IONIC CHARGES Group V -> Group VI -> Group VII -> Group VIII -> 3- 2- 1- Noble Gases
TYPES OF COMPOUNDS Ionic Compounds negative ions. • composed of positive and negative ions. • usually formed from a metal and non-metal.
TYPES OF COMPOUNDS Ionic Compounds • Examples NaCl CaBr2 KI
NAMING COMPOUNDS Your ability to name compounds and write formula’s hinges on your ability to recognize whether a compound is Ionic or Molecular.
BINARY IONIC COMPOUNDS Binary means 2 elements Ionic means a metal and a non-metal (or cation and anion) Writing Formulas • charges must balance so compound charge is neutral.
BINARY IONIC COMPOUNDS Writing Formulas from Names • 1st word = CATION • 2nd word = ANION name with ide ending.
BINARY IONIC COMPOUNDS NaBr MgF2 Sodium Bromide Magnesium Fluoride
BINARY IONIC COMPOUNDS Potassium Chloride Aluminum Oxide • notice ending of name is ide! K+Cl- -> KCl Al23+O32- -> Al2O3
Polyatomic Ions Definition •tightly bound groups of atoms that behave as a unit and carry a charge. Example SO32-, NO2-, ClO2-
TERNARY IONIC COMPOUNDS Ternary means 3 different elements Usually contain Poly-atomic Ions Ionic means cation and anion
TERNARY IONIC COMPOUNDS: Writing Formulas Ca2+CO32- -> CaCO3 Calcium Carbonate
TERNARY IONIC COMPOUNDS: Naming Calcium Nitrate Ca(NO3)2
Naming with Transition Metals First word = CATION Second word = ANION • You need to determine what charge is on the transition metal if more than one exists.
Naming Transition Metals Copper (I) Oxide Cu2O
Writing Formulas with Transition Metals FeCl3 FeCl2 Iron (III) Chloride Iron (II) Chloride