practice_midterm1_e

practice_midterm1_e - Name_ Student ID Number_ Lab TA Name...

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Name_________________________________________ Student ID Number__________________________ Lab TA Name and Time______________________ Dr. Bryan Enderle Winter 2004 CHEMISTRY 2B(A) Exam I Instructions: CLOSED BOOK EXAM ! No books, notes, or additional scrap paper are permitted. All information required is contained on the exam. Place all work in the space provided. If you require additional space, use the back of the exam. (1) Read each question carefully. (2) There is no partial credit for the problems in Part I and Part II. (3) The last page contains a periodic table and some useful information. You may remove this for easy access. (4) Graded exams will be returned in the discussion sections next week. (5) If you finish early, RECHECK YOUR ANSWERS! U.C. Davis is an Honor Institution Possible Points Points 1–19. 84 points 20. 15 points 21. 20 points Total Score (119) Multiple Choice 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19.
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Multiple Choice, Concepts Circle the correct answer and enter your response on the cover – No partial credit 1. (3 pts) What are the number of atoms in a unit cell and the coordination number (CN) of a body centered cubic lattice? A. 8 atoms; CN = 12 B. 2 atoms; CN = 8 C. 1 atom; CN = 6 D. 2 atoms; CN = 12 E. 4 atoms; CN = 12 2. (3 pts) The boiling point of NH 3 is higher than CH 4 due to A. ion-ion forces B. hydrogen bonding C. dipole–dipole forces D. special ops forces E. triple bonding 3. (3 pts) Bucky balls and nanotubes are all carbon molecules. These carbon molecules pack together in the solid state to form a(n) A. metal B. ionic solid C. molecular solid D. network covalent solid E. alloy 4. (3 pts) A triple point on a phase diagram is A. the point where all three phase boundaries meet B. the point where a solid can sublime to form a liquid C. the point where a solid can sublime to form a vapor D. the point where all three phases simultaneously transform into a saturated liquid. E. the point above which no increase in pressure or temperature will cause a phase
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practice_midterm1_e - Name_ Student ID Number_ Lab TA Name...

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