Introduction: It is important to be able to look at a compound, identify the elements present, and identify the type of compound present. Once you have recognized the compound by the type of elements present, the next step is to be able to say something about the electron arrangments in the bonds. Once you are able to do this, you are on the road to recognition of possible physical or chamical properties in compounds. This review will test your abilities to to recognize the various types of compounds and bonding. Click on a drop down menu to reveal the answer after you have made an attempt to answer on you own. Try to write you answers down first.

Compound	Type and bonding	Graphic Image
For the Quiz questions below, click on the graphic for the molecular structure, then write in your notes the name of the type of bonding (ionic, polar, non-polar), and then the electron definition. Finally check the first answer pull down box for the correct answer.
Iodine I2	non polar equal sharing of electrons	Graphic
Hydrochloric Acid HCl	polar unequal sharing of electrons	Graphic
Oxygen O2	non polar equal sharing of electrons	Graphic
Magnesium Oxide MgO	ionic transfer of electrons	Graphic
Water H2O	polar unequal sharing of electrons	Graphic
Sodium Fluoride NaF	ionic transfer of electrons	Graphic
Hydrogen H2	non polar equal sharing of electrons	Graphic
Methane CH4	non polar equal sharing of electrons. Carbon-Hydrogen exception All hydrocarbons are non polar.	Graphic
iron(III) oxide Fe2O3	ionic transfer of electrons	Graphic
Magnesium Nitride Mg3N2	ionic transfer of electrons	Graphic
Ethane C2H6	non polar equal sharing of electrons. Carbon-Hydrogen exception All hydrocarbons are non polar.	Graphic
Carbon Monoxide CO	polar unequal sharing of electrons	Graphic
Carbon Dioxide CO2	non polar molecule with polar bonds. Exception symetrically shaped molecules are non polar.	Graphic