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UNIT 3 REVIEW

UNIT 3 REVIEW. Elements. If the formula has ONE CAPITAL LETTER, it is an element, and its name is what is found on the periodic table (regardless of subscript). IONS. Positive ions are named for the element Na+ is the ‘sodium ion’ Negative ions end in ‘-ide’ Cl - is the “chloride ion”

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UNIT 3 REVIEW

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  1. UNIT 3 REVIEW

  2. Elements If the formula has ONE CAPITAL LETTER, it is an element, and its name is what is found on the periodic table (regardless of subscript)

  3. IONS Positive ions are named for the element Na+ is the ‘sodium ion’ Negative ions end in ‘-ide’ Cl- is the “chloride ion” Check table E for polyatomic ions (like NO3-)

  4. all TWO element compounds (two capital letters) end in –IDE, whether molecular or ionic NF3 nitrogen trifluoride CaCl2 calcium chloride

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

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

  7. KF potassium fluoride Mg2+ P3- magnesium phosphide Mg3P2

  8. If the metal can have more than one charge, use ROMAN NUMERALS in the name: Cu2+ Cl- copper (II) chloride CuCl2

  9. if non-metal is POLYATOMIC ION, compound ends in –ITE or –ATE: KNO3 potassium nitrate Na2SO4 sodium sulfate

  10. write formula and then name for: N2O4

  11. dinitrogen tetroxide

  12. SeF2

  13. selenium difluoride

  14. B4C

  15. tetraboron monocarbide

  16. MgI2

  17. magnesium iodide

  18. Ag2S

  19. silver sulfide

  20. AlBr3

  21. aluminum bromide

  22. sodium oxide

  23. Na2O

  24. lithium phosphide

  25. Li3P

  26. O2

  27. oxygen

  28. beryllium arsenide

  29. Be3As2

  30. iron(II) sulfide

  31. FeS

  32. chromium (III) fluoride

  33. CrF3

  34. lead (IV) hydride

  35. PbH4

  36. NiN

  37. nickel (III) nitride

  38. MnO2

  39. manganese (IV) oxide

  40. TiCl3

  41. titanium (III) chloride

  42. LiNO3

  43. LiNO3

  44. Oxide ion

  45. O2-

  46. NH4F

  47. ammonium fluoride

  48. MgCO3

  49. magnesium carbonate

  50. calcium chlorate

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