1. Naming Molecules

2. P2O5P2O5

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

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

5. 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

6. 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

7. 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

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

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

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

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

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

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

14. Common Names

15. We don’t usually talk about dihydrogen monoxide

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

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

18. Common Names dihydrogen monoxide H 2 O water

19. Common Names nitrogen trihydride

20. Common Names nitrogen trihydride NH 3

21. Common Names nitrogen trihydride NH 3 ammonia

22. Common Names dinitrogen tetrahydride

23. Common Names dinitrogen tetrahydride N 2 H 4 hydrazine

24. Common Names dinitrogen monoxide

25. Common Names dinitrogen monoxide N 2 O

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

27. Common Names nitrogen monoxide

28. Common Names nitrogen monoxide NO nitric oxide

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

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

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

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

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

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

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

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

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

38. 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

39. 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

40. 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

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

42. 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

43. 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

44. 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

45. 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

46. 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 -

47. 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

48. 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

49. Read section 9.2 (pages 248-251) in the textbook and do problems 27, 28, and 29 on page 251. This is due at the end of the period. For the rest of the period….