1. Read section 9.2 (pages 248-251) Do problems 13-17 on page 249 and 18-22 on page 250. Answer question 23 on page 251. Check your answers in the back of the book, on page 926. Homework:

2. Write the Lewis structures for the following molecules Daily Quiz 247

3. 1.One atom of carbon and two atoms of oxygen. 2.One atom of oxygen and two atoms of chlorine. 3.Two atoms of iodine. 4.Four atoms of fluorine and one atom of silicon. Daily Quiz 247

4. 1.One atom of carbon and two atoms of oxygen. O=C=O Daily Quiz 247

5. 2.One atom of oxygen and two atoms of chlorine. Cl-O-Cl Daily Quiz 247

6. 3.Two atoms of iodine. I I Daily Quiz 247

7. 4.Four atoms of fluorine and one atom of silicon. F F-Si-F F Daily Quiz 247

8. Naming Molecules

9. P2O5P2O5

10. Rule 1: The first element in the formula is always named first, using the entire element name. P2O5P2O5

11. Naming Molecules Rule 1: The first element in the formula is always named first, using the entire element name. P 2 O 5 phosphorous

12. Naming Molecules Rule 2: The second element in the formula is named using the root of the element and adding the suffix –ide. P 2 O 5 phosphorous

13. Naming Molecules Rule 2: The second element in the formula is named using the root of the element and adding the suffix –ide. P 2 O 5 phosphorous oxide

14. Naming Molecules Rule 3: P 2 O 5 phosphorous oxide This is new!

15. Naming Molecules Rule 3: Prefixes are used to indicate the number of atoms of each type that are present in the compound. P 2 O 5 phosphorous oxide

16. Naming Molecules 1mono- 2di- 3tri- 4tetra- 5penta- P 2 O 5 phosphorous oxide 6 hexa- 7hepta- 8octa- 9nona- 10deca-

17. Naming Molecules 1mono- 2di- 3tri- 4tetra- 5penta- P 2 O 5 diphosphorous pentoxide 6 hexa- 7hepta- 8octa- 9nona- 10deca-

18. Naming Molecules Exception: The first element never uses the prefix mono-.

19. Naming Molecules Exception: The first element never uses the prefix mono-. CO carbon monoxide

20. Naming Molecules Exception: The first element never uses the prefix mono- CO carbon monoxide Not monocarbon monoxide.

21. Naming Molecules You will have to use these rules on your next test.

22. Naming Molecules You will have to use these rules on your next test. You may use the flow chart on any test or quiz I give for the rest of the year.

23. Common Names

24. We don’t usually talk about dihydrogen monoxide

25. Common Names We don’t usually talk about dihydrogen monoxide H2OH2O

26. Common Names We don’t usually talk about dihydrogen monoxide. It’s just called water. H2OH2O

27. Common Names dihydrogen monoxide H 2 O water

28. Common Names nitrogen trihydride

29. Common Names nitrogen trihydride NH 3

30. Common Names nitrogen trihydride NH 3 ammonia

31. Common Names dinitrogen tetrahydride

32. Common Names dinitrogen tetrahydride N 2 H 4 hydrazine

33. Common Names dinitrogen monoxide

34. Common Names dinitrogen monoxide N 2 O

35. Common Names dinitrogen monoxide N 2 O nitrous oxide laughing gas

36. Common Names nitrogen monoxide

37. Common Names nitrogen monoxide NO nitric oxide

38. Common Names I will not ask you to memorize common names. I just want you to know they exist.

39. Naming Acids If a molecule forms an acid when dissolved in water, there are other rules.

40. Naming Acids Acid rule 1: binary acids (HX)

41. Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element

42. Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element HCl

43. Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element HCl hydrochloric acid

44. Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element HBr

45. Naming Acids Acid rule 1: binary acids (HX) hydro________ic acid Fill in the blank with the root of the element HBr hydrobromic acid

46. Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen

47. Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen hydro________ic acid Fill in the blank with the root of the polyatomic ion

48. Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen hydro________ic acid Fill in the blank with the root of the polyatomic ion Look it up on page 224

49. Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen hydro________ic acid Fill in the blank with the root of the polyatomic ion HCN

50. Naming Acids Acid rule 2: polyatomic ions (HXY) with no oxygen hydro________ic acid Fill in the blank with the root of the polyatomic ion HCN hydrocyanic acid

51. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite

52. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 3

53. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 3 Look it up on page 224

54. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 3 NO 3 - nitrate

55. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 3 NO 3 - nitric acid nitrate

56. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 2

57. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 2 NO 2 -

58. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 2 NO 2 - nitrite

59. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite HNO 2 NO 2 - nitrous acid nitrite

60. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite An easy way to remember this rule…

61. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite I ate it! Ick! Don’t bite us!

62. Naming Acids Acid rule 3: oxyacids (HXO) _____ic acid if the ion ends in –ate _____ous acid if the ion ends in -ite I ate it! Ick! Don’t bite us!

63. Read section 9.2 (pages 248-251) Do problems 13-17 on page 249 and 18-22 on page 250 Answer question 23 on page 251 Check your answers in the back of the book, on page 926. For the rest of the period…