1. UNIT 3 REVIEW

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

3. diphosphorus pentoxide
MOLECULAR COMPOUNDS:
- start with a NON-METAL
- use PREFIXES in the name
P2O5
diphosphorus pentoxide

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

5. KF potassium fluoride
Mg P3-
magnesium phosphide
Mg3P2

6. copper (II) chloride CuCl2
If the metal can have more than one charge, use ROMAN NUMERALS in the name:
Cu Cl-
copper (II) chloride CuCl2

7. if non-metal is POLYATOMIC ION, compound ends in –ITE or –ATE:
KNO potassium nitrate
Na2SO4 sodium sulfate

8. CO2, O2-, F2, Na2SO4, PO43-, Na+, C, KOH, Al3+ , P4, NO2-, Si, N2O5, Fe2O3, Br-
Which are…
Atoms?
Molecules ?
Ions?
Ionic compounds:
Elements: C Si
CO2 F2 P4
N2O5
O2-
PO43-
Na+
Al3+
NO2-
Br-
Fe2O3
Na2SO4
KOH C Si P4 F2

9. write formula and then name for:
N2O4

10. dinitrogen tetroxide

11. SeF2

12. selenium difluoride

13. B4C

14. tetraboron monocarbide

15. MgI2

16. magnesium iodide

17. Ag2S

18. silver sulfide

19. AlBr3

20. aluminum bromide

21. sodium oxide

22. Na2O

23. lithium phosphide

24. Li3P

25. LiNO3

26. lithium nitrate

27. beryllium arsenide

28. Be3As2

29. iron(II) sulfide

30. FeS

31. chromium (III) fluoride

32. CrF3

33. lead (IV) hydride

34. PbH4

35. barium hydroxide

36. Ba(OH)2

37. NiN

38. nickel (III) nitride

39. MnO2

40. manganese (IV) oxide

41. K3PO4

42. potassium phosphate

43. TiCl3

44. titanium (III) chloride

45. NH4F

46. ammonium fluoride

47. MgCO3

48. magnesium carbonate

49. calcium chlorate

50. Ca(ClO3)2

51. lithium phosphate

52. Li3PO4

53. aluminum nitrate

54. Al(NO3)3

55. Pb(NO3)2

56. lead(II) nitrate

57. nitrogen triiodide

58. NI3

59. sodium sulfide

60. Na2S

61. SrSO4

62. strontium sulfate

63. carbon tetrachloride

64. CCl4

65. BBr3

66. boron tribromide

67. nickel (III) carbonate

68. Ni2(CO3)3

69. zinc oxide

70. ZnO

71. RbH

72. rubidium hydride