1. Bonds Lewis Structures Lab Potpourri 100 200 300 400 500 Final

2. 100 Bonds Define covalent bond Answer Answer

3. Bonds 100 attraction between atoms that results from sharing electron pairs

4. 200 Bonds the bonded atoms have an unequal attraction for shared electrons Answer Answer

5. Bonds 200 polar covalent bond

6. 300 Bonds Classify each of the following as PC, NPC or I bonds. Show numerical proof. Indicate  - for PC bonds. Sr-Cl Cl-I Si-P Al-H Answer Answer All Play!

7. Bonds 300 Sr-Cl EN diff = 2.0, Ionic Cl-I EN diff = 0.5, PC Si-P EN diff = 0.3 NPC Al-H EN diff = 0.6 PC -- --

8. 400 Bonds How many bonds each do C and H have in a molecule? Answer Answer

9. Bonds 400 4 for C, 1 for H

10. 500 Bonds List 3 elements that can have multiple bonds (double and triple bonds) Answer Answer

11. Bonds 500 Nitrogen Carbon Oxygen

12. 100 Lewis Structures List the ABE formula, geometry, bond angles for each of the following: Answer Answer

13. Lewis Structures 100 AB2E2, bent, 105 o AB 5 triangular bipyramidal, 90 o and 120 o

14. 200 Lewis Structures Show resonance for a molecule of O 3. Answer Answer

15. Lewis Structures 200

16. 300 Lewis Structures Draw Lewis structures, identify ABE formula, geometry, bond angles, polarity NO 2 ClGeH 4 Answer Answer

17. Final Jeopardy Draw a Lewis structure for ethyl alcohol, C 2 H 5 OH Draw a Lewis structure for ethyl alcohol, C 2 H 5 OH Answer

18. Final Jeopardy Answer

19. Lewis Structures 300 AB 3, triangular planar, 120 o, polar AB4, tetrahedral, 109.5 o, nonpolar

20. 400 Lewis Structures For the models shown, list ABE formula, geometry, bond angles, assuming bonds are polar, is molecule polar? (yes or no) Answer Answer All Play!

21. Lewis Structures 400 AB 4, tetrahedral, 109.5 o, yes polar AB 2 E 2 bent, 105 o, yes polar

22. 500 Lewis Structures Make models for the following: BeCl 2 SiF 4 Answer Answer

23. Lewis Structures 500 BeCl 2 SiF 4 linear tetrahedral

24. 100 Lab What anion fizzes when HCl is added to it, yet it does not bleach KMnO 4 soaked filter paper? Answer Answer

25. Lab 100 The carbonate ion CO 3 2-

26. 200 Lab What lab test would you perform to determine if an unknown substance is either MgCl 2 or Ni(NO 3 ) 2. State expected results for each identity. Answer Answer

27. 200 Lab The AgNO 3 precipitate test would give a clear solution with Ni(NO 3 ) 2 and a cloudy, white precipitate with MgCl 2

28. 300 Lab Write the formula of the compound that has an Orange/yellow flame and bleaches KMnO 4 soaked filter paper. Answer Answer

29. 300 Lab Na 2 SO 3

30. 400 Lab Circle all of the following that are electrolytes: H 2 SO 4 CH 4 KBr NH 4 F C 6 H 12 O 6 Answer Answer

31. Lab 400 H 2 SO 4 is an acid. KBr and NH 4 F are ionic compounds.

32. 500 Lab Describe 3 tests you could use to differentiate between NH 4 NO 3 and K 2 CO 3. Describe results expected in each test. Answer Answer

33. Lab 500 NH 4+ test – add NaOH to (aq) compound, moistened red litmus over top turns blue Add HCl. If CO 3 2- present, will fizz. Flame test – K burns peach

34. 100 Potpourri all molecules have this type of intermolecular attraction AnswerAnswer

35. Potpourri 100 London forces

36. Which of the following substances has hydrogen bonding between its molecules? 200 Potpourri Answer

37. Answer for Potpourri 200 none – no bond btwn F and H Yes – O-H bond yes– N-H bond

38. 300 Potpourri Of the following substances, which has the highest/lowest boiling point? C 5 H 12 C 3 H 8 C 9 H 20 C 4 H 10 Answer Answer

39. Potpourri 300 All are nonpolar hydrocarbons, so lowest molar mass (C 3 H 8 ) has lowest b.p. Highest molar mass (C 9 H 20 ) has highest b.p.

40. Which of the following substances has the highest boiling point. Explain your reasoning. Answer Answer 400 Potpourri

41. Potpourri 400 This compound is polar with hydrogen bonding between molecules. This strong intermolecular attraction will require more energy to break and move molecules apart into gas phase. CH 4 is nonpolar. CH 3 F is polar and has weak dipole-dipole attractions only.

42. 500 Potpourri List the three types of intermolecular forces in order of increasing strength. Answer Answer

43. Potpourri 500 London forces Weakest: London forces (in all molecular compounds) Dipole-Dipole Dipole-Dipole (all polar compounds) Hydrogen bonding Strongest: Hydrogen bonding (in compounds with N-H, O-H or F-H bonding)