Bonding Objectives

Introduction:

            This unit will cover the other way that elements combine to form ionic, metallic and molecular compounds: covalent bonds.  Writing formulas, naming molecular compounds and showing written representations of covalent bonds will be stressed.  In addition, you will need to remember and use the basic arrangement of the periodic table to uncover bonding patterns.

Terms:  You should be able to define and give examples for the following terms:

valence e- rules, minimal energy state rules, entropy or disorder rules, element family, group, period, series, noble gases, halogens, alkali metals, alkali-earth metals, transition metals, inner transition metals (lanthanides, actinides), [s,p,d,& f blocks], ionic bond, metallic bond, covalent bond, electronegativity, ionization energy, effective nuclear charge, lone vs. non-bonding electron pairs, molecular polarity (nonpolar, polar, dipole, charge vectors)
 

Objectives:  These basic skills should be mastered. This means you need to WRITE out the answers to these objectives- the form the written review takes is up to you. It can be an outline, idea web, flashcards, short answer, etc.
 

1.           Distinguish between ionic, metallic, and covalent bonds based on the location of the participating atoms in the periodic table and their electronegativity differences.

2.           Be able to write Lewis dot structures for atoms based on their group.

3.           Identify the charge of an ion based on the losing or gaining e- to reach a more minimal energy state. State the pattern on the periodic table for forming ions based on filling or revealing a full valence shell.

   6.           Name and write the correct compound formulas for ionic structures. These include the polyatomic ions on the �Ions to Memorize� sheet.

8.       Write the formula of covalent compounds given the name or vice-versa.

9.          Draw the Lewis dot structures of elements based on their valence electron shell.

10.    Determine the direction of polarity of a polar bond based on electronegativity differences.

11.      Distinguish between a polar and nonpolar covalent molecule. Be able identify a bond's polarity given the element's electronegativity values.

•  Practice Questions