2. Topic 1Topic 2Topic 3Topic 4Topic 5 10 20 30 40 50

3. Question 1 - 10 How many valance electrons do each of the following elements have: – Magnesium – Fluorine – Oxygen

4. Answer 1 – 10 2 7 6

5. Question 1 - 20 Define covalent bonding

6. Answer 1 – 20 A bond in which 2 or more atoms are held together through the sharing of electrons

7. Question 1 - 30 What is the difference between a polar and non-polar covalent bond? When must you draw a dipole?

8. Answer 1 – 30 A polar bond is when a dipole must be drawn. It represents the unequal sharing of electrons between 2 atoms (0.41-2.0 electronegativity difference) A non-polar bond is when the electron between 2 atoms are being shared equally

9. Question 1 - 40 Name the 7 diatomic molecules and draw their Lewis dot structures

10. Answer 1 – 40 Bromine, Iodine, Nitrogen, Chlorine, Hydrogen, Oxygen, Fluorine

11. Question 1 - 50 Draw the Lewis Dot structure for the following 2 molecular compounds (draw dipoles where they are necessary) – C 2 HF – CH 2 O

12. Answer 1 – 50 DRAWING

13. Question 2 - 10 In an ionic bond the electrons are ____________ between 2 atoms

14. Answer 2 – 10 Transferred

15. Question 2 - 20 Give an example of 2 atoms that would combine to form an ionic compound. Give an example of 2 atoms that would combine to form a covalent compound

16. Answer 2 – 20 Answers will vary (many options!)

17. Question 2 - 30 Draw the electron transfer for the following ionic bond Aluminum and Sulfur

18. Answer 2 – 30 DRAWING! Al 2 S 3

19. Question 2 - 40 Identify the shape and bond angle for the following covalent compounds – H 2 O – NH 3

20. Answer 2 – 40 Bent, 105 Trigonal Pyramidal, 107

21. Question 2 - 50 What is the bond angle for a tetrahedral molecule? Linear molecule? Trigonal planar? Give an example of 2

22. Answer 2 – 50 109.5, 180, 120 Answers will vary

23. Question 3 - 10 Which of the following compounds contains a polar bond – CO 2 – CH 4 – Cl 2 – HCN

24. Answer 3 – 10 CO 2 and HCN

25. Question 3 - 20 Draw the Lewis Dot Structure for N 2 H 2 with dipoles if necessary

26. Answer 3 – 20 DRAWING

27. Question 3 - 30 Draw the electron transfer for the following ionic compound – Potassium and Nitrogen

28. Answer 3 – 30 DRAWING

29. Question 3 - 40 A ____________ is defined by having 3 shared pairs of electrons between two atoms A ______________ is defined by have 2 shared pairs of electrons between two atoms

30. Answer 3 – 40 Triple covalent bond Double covalent bond

31. Question 3 - 50 How many unshared pairs of electrons are on each oxygen atom in an oxygen-oxygen covalent bond?

32. Answer 3 – 50 2 on each oxygen

33. Question 4 - 10 Ionic or covalent? CaF 2

34. Answer 4 – 10 Ionic

35. Question 4 - 20 Ionic or covalent? CH 5 N

36. Answer 4 – 20 Covalent

37. Question 4 - 30 Ionic compounds are formed between a ___________ and a _____________ Covalent compounds are formed between two or more ________________

38. Answer 4 – 30 Metal and Nonmetal Nonmetals

39. Question 4 - 40 What is a metallic bond?

40. Answer 4 – 40 The positive metal cations are surrounded by a sea of mobile electrons (free-flowing) that allow metals to be good conductors of electricity

41. Question 4 - 50 What is an alloy? What is the most important alloy today?

42. Answer 4 – 50 A mixture of two or more elements, one must be a metal Steels are the most important alloy today

43. Question 5 - 10

44. Answer 5 – 10

45. Question 5 - 20

46. Answer 5 – 20

47. Question 5 - 30

48. Answer 5 – 30

49. Question 5 - 40

50. Answer 5 – 40

51. Question 5 - 50

52. Answer 5 – 50