Chemistry Exam 2 Prep

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LeeHPham
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200849
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Chemistry Exam 2 Prep
Updated:
2013-02-18 01:56:50
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p. 33-61
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  1. Compound 
    • H2SO4 = 2H, 1S, 4O, Molecule = 1
    • 3 C6H12O6 = 18C, 36H, 18O, Molecule = 3
    • 2 Ca3(PO4)2 = 6Ca, 4P, 16O, Molecule = 2
  2. HOFBrINCl 
    7 Diatomic ending with 2. 
  3. Polar
    Unbalance atom pulls.
  4. Nonpolar
    Balance atom pulls.
  5. Octet Rule
    Atoms bond to get 8 electron for outermost shell.
  6. Dipole
    Arrow for Covalent Bonds with Negative for Arrow side and Positive for other.
  7. Ion
    A charged atom
  8. Oxidation Number: Rules to know
    • Oxygen is usually -2
    • Hydrogen is usually +1
    • Flourine is always -1
  9. Prefix 1 =
    Mono
  10. Prefix 2 =
    Di
  11. Prefix 3 =
    Tri
  12. Prefix 4 =
    Tetra
  13. Prefix 5
    Penta
  14. Prefix 6
    Hexa
  15. Prefix 7 =
    Hepta
  16. Prefix 8 =
    Octa
  17. Binary compound (2 elements only) composed of metal (cation) and nonmental (anion)
    • 1. Name metal first using full element name.
    • 2. Look up oxidation number for mental on the periodic table.
    • a. If the metal is a transition element or an element with more than one oxidation number listed, figure out the charge, use () with roman numerals after the name of the metal.
    • b. If the metal has only one oxidation number, do not use ().
    • 3. Name the nonmental second, drop the ending and add suffix "ide" to the end.
  18. Binary compound composed of two nonmetals (no ions)
    • 1. The least electronegative element is named first using the full element name.
    • a. The first element has no prefix unless it contains more than one atom.
    • 2. The most electronegative element is named second and ALWAYS has a prefix.
    • a. Drop the ending and add "ide"
  19. Compounds containing polyatomic ions (more than two elements)
    • 1. Metals are named first using the full element name.
    • 2. Polyatomic ions retains its name whether a positive iron or negative ion.
  20. Metal and Non-Metal
  21. To find the percent of each element in a compound
    ((Atomic mass of the element x the number of atoms of the element) / total molar mass of the compound)) x 100
  22. Elemts in each group have oxidation numbers as...
    • Group 1 = +1
    • Group 2 = +2
    • Group 3 = +3
    • ...
    • Group 7 = -1 only if bond with metal.

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