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What about this test?? • • • • • • Begin at 8:00 a.m. 45 minutes long Will have lecture afterwards at 8:50 a.m. Should bring a pen (blue or black ink) 30 points: multiple choice questions 70 points: problem solving 1 What’s on the test? • Through section 3.5 on page 88 • Expect 1 or 2 questions based upon the assigned homework • Meant to be straightforward; if you don’t understand a question, ask me. 2 Chapter 1 • • • • • Hybridization of orbitals Geometry / shape / bond angles What are the orbitals at C in ethylene? H What is the shape? C C What is the bond angle? H H H 3 Chapter 2 • Dipole moment – What is direction of dipoles in bonds, in molecules • Formal charges. I will give a molecule and ask the formal charge at an atom • Resonance. Draw the resonance forms for nitromethane? For methylbenzene, etc., 4 Chapter 2 Continued • Strong and weak acids and bases • Which is which; where does equilibrium lie? • CH3CO2H + OH- ⇌ H2O + CH3CO2- • Which is more acidic acetone or methane? Recall: smaller pKa means increased acidity 5 Chapter 2 • Be able to recognize and draw skeletal structures 6 Chapter 3 • Functional Groups (29 points) – Given a compound be able to identify the functional group – Given a functional group, be able to sketch a compound • Naming – From the name, write the structure – From the structure, write the name 7