chem111 ch2&3

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Author:
gatorlea92
ID:
201907
Filename:
chem111 ch2&3
Updated:
2013-02-19 21:57:14
Tags:
eku chem111 stochiometry
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Description:
chapter 2&3 exam review 2 chem 111 EKU
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  1. Covalent Compound?
    • compounds characterized by covalent bonding
    • formed between nonmetals
    • exists as discrete molecules in the solid, liquid, and gas state
  2. Naming Covalent Compounds:
    • names of elements appear in the order that they appear in the compound
    • prefixes indicate the number of each kind
    • only use mono on second element
    • last element name ends in -ide.
  3. mono
    1
  4. di-
    2
  5. tri-
    3
  6. tetra-
    4
  7. penta-
    5
  8. hexa-
    6
  9. hepta-
    7
  10. octa-
    8
  11. nona-
    9
  12. deca-
    10
  13. ionic compound
    cation and anion
  14. acid?
    a substance that yeilds hydrogen ions (H+) when dissolved in water
  15. Naming Acids: Oxyacids
    • 1. Name the polyatomic ion
    • 2. replace ate with ic, ite with ous
    • 3. add "acid" to the name
  16. base?
    a substance that yeilds hydroxide ions (OH-) when dissolved in water
  17. Hydrates?
    compounds that have a specific number of water molecules attached to them
  18. atomic mass?
    mass of an atom in atomic mass units (amu)
  19. average atomic mass?
    weighted average of all the naturally occuring isotopes of the element
  20. Mole (mol)
    • a unit to count numbers
    • the amount of a substance that contains as many elementary entities as there are atoms
  21. Avogadro's number (NA)
    6.022 x 1023
  22. Molecular mass
    • mass of one mole of molecules, atoms, or other particles in grams.
    • the sum of the atomic masses (in amu) in a molecule
  23. Formula Mass
    (formula weight) of a molecule is the sum of the atomic weights of the atoms in its empirical formula
  24. Percent composition
    • n x molar mass of an element¬†¬†¬† x100
    • molar mass of compoud

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