mccord ch304k

exam 3

11/6



Exam 3

Wednesday 11/6
2-2:50pm
UTC 2.102A


What we provide on Exams We will provide all students with:

  • the Exam
    • cover page with periodic table
    • actual exam - 20 multiple choice questions
  • an answer sheet - aka: bubblesheet

The cover page with the periodic table will be very similar to the one available in the Appendix of the ChemBook website (Chapter 10).

NOTE: There are NO calculations of any type and therefore NO calculators of any type will be allowed.

Coverage: Exam 3 covers all the material that was covered on HW's 05 and 06. ChemBook Chapters: The exam covers all of Chapter 4 although mainly sections 5-12 because 1-4 was on exam 2, but you still need to know that stuff. Topics are covalent bonding, electron dot and line structures, abbreviated line structures where you figure out the number of carbons and hydrogens, formal charge assignment and use, resonance, VSEPR theory including electronic and molecular geometries, bond order - strengths and lengths, environmental issues and science: greenhouse gases and global warming and ozone layer depletion.

Questions: The exam will have 20 multiple choice questions. This means that each question is worth 5 points. We will only grade you by what is bubbled in on the answer sheet that you turn in. We will not look at your exam copy for answers, nor consider them in any way. Bubble carefully and correctly.

Bring the Following to the Exam

  • UT ID Card / picture ID
  • a pencil(s) - mechanical or wood
  • scanner only reads pencil - no ink!
  • bring eraser if you are prone to mistakes
  • we provide the rest - see previous section

DO NOT bring...

  • ink pens
  • CALCULATORS of any type
  • electronic devices - phones, earbuds, etc...
  • smart watches - put away that smart watch!

Learning Outcomes for Exam 3

Students will know...

  1. how to draw and interpret electron line/dot structures
  2. how to tell the difference in non-polar and polar bonds
  3. how to determine whether a molecule is polar or not
  4. how to assign formal charge to all atoms in a molecule or ion
  5. how to assess whether a structure will exhibit resonance
  6. how to depict resonance with multiple structures and what it means
  7. what electron delocalization means
  8. how to assess structures and determine the electronic geometry surrounding an atom in the structure
  9. how to determine the molecular geometry surrounding an atom in a structure
  10. the relative strengths and lengths of molecular bonds
  11. how to assess the bond order of a bond for both regular structures and resonance structures
  12. what the criteria are for a greenhouse gas
  13. the major greenhouse gases affecting our climate
  14. what and where the ozone layer is
  15. the role the ozone layer plays in our over all global climate
  16. how CFCs are detrimental to the ozone layer and the mechanism by which they operate