1. UNIT 3 REVIEW

2. all TWO element compounds (two capital letters) end in – IDE, whether molecular or ionic NF 3 nitrogen trifluoride CaCl 2 calcium chloride

3.  MOLECULAR COMPOUNDS: - start with a NON-METAL - start with a NON-METAL - use PREFIXES in the name - use PREFIXES in the name P 2 O 5 diphosphorus pentoxide diphosphorus pentoxide

4.  IONIC COMPOUNDS: - start with a METAL - start with a METAL - NO prefixes in name - NO prefixes in name - if given name write SYMBOL and CHARGE above names to find formula - if given name write SYMBOL and CHARGE above names to find formula

5. KF potassium fluoride Mg 2+ P 3- Mg 2+ P 3- magnesium phosphide Mg 3 P 2 Mg 3 P 2

6.  If the metal can have more than one charge, use ROMAN NUMERALS in the name: Cu 2+ Cl - Cu 2+ Cl - copper (II) chloride CuCl 2

7. if non-metal is POLYATOMIC ION, compound ends in –ITE or –ATE: KNO 3 potassium nitrate Na 2 SO 4 sodium sulfate

8. CO 2, O 2-, F 2, Na 2 SO 4, PO 4 3-, Na +, C, KOH, Al 3+, P 4, NO 2 -, Si, N 2 O 5, Fe 2 O 3, Br -  Which are… Atoms? Molecules ? Ions? Ionic compounds: Elements: CSi P4P4 CO 2 F2F2 P4P4 O 2- PO 4 3- Na + Al 3+ NO 2 - Br - Fe 2 O 3 Na 2 SO 4 KOH CSi N2O5N2O5 F2F2

9.  write formula and then name for: N 2 O 4

10.  dinitrogen tetroxide

11. SeF 2

12.  selenium difluoride

13. B4CB4CB4CB4C

14. tetraboron monocarbide

15. MgI 2

16.  magnesium iodide

17. Ag 2 S

18.  silver sulfide

19. AlBr 3

20.  aluminum bromide

21. sodium oxide

22. Na 2 O

23. lithium phosphide

24. Li 3 P

25. LiNO 3

26. lithium nitrate

27. beryllium arsenide

28. Be 3 As 2

29. iron(II) sulfide

30. FeS

31. chromium (III) fluoride

32. CrF3

33. lead (IV) hydride

34. PbH 4

35. barium hydroxide

36. Ba(OH) 2

37. NiN

38. nickel (III) nitride

39. MnO 2

40. manganese (IV) oxide

41. K 3 PO 4

42. potassium phosphate

43. TiCl 3

44. titanium (III) chloride titanium (III) chloride

45. NH 4 F

46. ammonium fluoride ammonium fluoride

47. MgCO 3 MgCO 3

48. magnesium carbonate

49. calcium chlorate calcium chlorate

50. Ca(ClO 3 ) 2 Ca(ClO 3 ) 2

51. lithium phosphate lithium phosphate

52. Li 3 PO 4 Li 3 PO 4

53. aluminum nitrate

54. Al(NO 3 ) 3

55. Pb(NO 3 ) 2

56. lead(II) nitrate lead(II) nitrate

57. nitrogen triiodide

58. NI 3

59. sodium sulfide

60. Na 2 S Na 2 S

61. SrSO 4 SrSO 4

62. strontium sulfate

63. carbon tetrachloride

64. CCl 4

65. BBr 3

66. boron tribromide

67. nickel (III) carbonate

68. Ni 2 (CO 3 ) 3 Ni 2 (CO 3 ) 3

69. zinc oxide

70. ZnO

71. RbH

72. rubidium hydride