Overview Metals and Non-Metals Ions and Ionic Charges Types of Compounds Systematic Names -Writing Names and Formulas

General Information Binary Ionic Compounds Ternary Ionic Compounds/Poly-atomic Ions Naming w/metals that have more than 1 charge (Transition Metals) Naming w/metals that have more than 1 charge (Transition Metals) Molecular Compounds Naming Acids

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

Cations Positively Charged Atoms i.e.Na + Anions Negatively Charged Atoms i.e.Cl -

Group I -> Group II -> Group III -> Group IV ->

Group V -> Group VI -> Group VII -> Group VIII -> Noble Gases

Ionic Compounds composed of positive and negative ions. usually formed from a metal and non-metal. these elements are not attached to one another.

Ionic Compounds con’t Examples NaCl CaBr 2 KI

Definition shows the kind and numbers of atoms in the smallest representative unit of the substance. i. e. NaCl

A formula unit is the lowest whole number ratio of ions in an ionic compound. i.e. Na 2 Cl 2 -> NaCl There is no such thing as a molecule of NaCl!!!!!!!!!

Your ability to name compounds and write formula’s hinges on your ability to recognize whether a compound is Ionic or Molecular.

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.

Writing Formulas from Names 1st word = CATION 2nd word = ANION name with ide ending.

NaBr MgF 2 Sodium Bromide Magnesium Fluoride

Potassium Chloride Aluminum Oxide notice ending of name is ide! K + Cl - -> KCl Al 2 3+ O > Al 2 O 3

Definitiontightly bound groups of atoms that behave as a unit and carry a charge. Example SO 3 2-, NO 2 -, ClO 2 -

Ternary means 3 different elements Usually contain Poly-atomic Ions Ionic means cation and anion

Ca 2+ CO > CaCO 3 Calcium Carbonate

Calcium Nitrate Ca(NO 3 ) 2

First word = CATION Second word = ANION You need to determine what charge is on the transition metal if more than one exists.

Copper (I) Oxide Cu 2 O

FeCl 3 FeCl 2 Iron (III) Chloride Iron (II) Chloride

Molecular Compounds composed of molecules in which elements share electrons. usually composed of 2 nonmetals. these elements are attached

Definition shows the numbers and kinds of atoms present in a molecule of a compound. i. e. CO

Molecular Compounds con’t Examples CS 2 SiO 2 BF 3

Binary means 2 elements Molecular means 2 non- metals NO ionic charges are present

Prefixes are used to show how many atoms are present in each molecule. mono, di, tri,tetra, penta, hexa, hepta, octa, nona, deca

CO 2 no mono prefix is used on first element Carbon Dioxide Di means 2 oxygens!!

2 ways it’s done! (prefix + element name) i.e. N 2 O dinitrogen monoxide

(prefix + element root + ide) i.e.PCl 3 Phosphorous Trichloride All binary compounds end in ide!!!

Anion Endings ide Example HCl Acid Name hydro- (stem)- icacid Hydrochloric Acid

Anion Ending ite Example Hydrogen Sulfite Acid Name (stem)-ous acid Sulfurous Acid

Anion Ending ate Example Hydrogen Sulfate Acid Name (stem)-ic acid Sulfuric Acid