Study Guide Test 4

Study Guide Test 4 - Study Guide: Chapter 10-13, 16 Test 4...

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Study Guide: Chapter 10-13, 16 Test 4 AS BEFORE: Make sure you have your correct PID and test form labeled on BOTH the scantron and the test forms. It will prevent a lot of headaches if there was a mistake later. You should circle the answers on the test form, and turn it in. Furthermore, you should look at the prior study guide and test/homework to make sure you were comfortable with the octet skills, because the new material (non-octet, intermolecular forces, etc.) builds on those skills (i.e. you use similar “rules” for building the Lewis structures) I have attempted to put the relevant sections from the Chapters for which you should study. Material not covered in class (on the powerpoints) will not be on the test. Use your HW and the skills herein as a guide for the expected material. FOR EXAMPLE: These are expected “prior knowledge skills” (a Lewis structure may have several atoms “obey the octet rule” but the question is not explicitly asking about this part-only how it describes the properties of the molecule as a whole) PRIOR KNOWLEDGE Be able to generate Lewis Dot structures for atoms Be able to generate Lewis covalent structures using the octet rule-formal charge, assigning dipoles to each element and atom as a whole Rationalize some properties of covalent structures: Bond length, Bond Energy Be able to determine the formal charge on an atom in a covalent structure Be able to solve resonance structures EXPECTED KNOWLEDGE Chapter 10: VSEPR and molecular shape Section 10.2: Understand the shapes/hybrization/angle relations for molecules where the central atom does not obey the octet rule o Central atom should have a zero formal charge o Know all the names/shapes in Figures 10.7/10.8 o Understand the basic bond angles in Figure 10.9 (know where electron repulsions reduce angles) Follow the flowchart in Figure 10.10 (how to assign electron pairs in axial vs equatorial positions to get the correct structures) Section 10.3: See if you can imagine different dipoles for the molecule as a whole (look for symmetry) and/or isomers (cis vs trans)
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This note was uploaded on 10/16/2009 for the course CHEM 1035 at Virginia Tech.

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Study Guide Test 4 - Study Guide: Chapter 10-13, 16 Test 4...

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