Chemistry ch 8

  1. Mole
    SI unit for the amount of substance in a given example.
  2. Moles are equal to the amount of substance that contains as many particles as
    12g C-12
  3. Avagadro's Number
    The number of particals (atoms) in a mole of any element
  4. Molar mass is measured in
  5. Molecular mass is measured in
  6. Molar mass
    • The mass of one mole of a pure substance
    • (Atomic weight)
  7. Most reactions take place in
    a solution
  8. Molarity
    Describes the concentration of a solution
  9. Molarity formula
    • Moles of solute//dm^3 of solvent
    • Or Moles//Liters
  10. Percent compisition of a compound gives the
    Relative amount of each element present
  11. Percent compisition stepls
    • 1. Calculate the molar mass of each element
    • 2. Calculate the formula mass for the compound
    • 3. Divide the mass of each element by the total
    • 4. Multiply by 100
  12. Empirical Formula
    The simplest whole-number ratio of different atoms in a compound
  13. Moles in a compound are in
    simple, whole number ratios
  14. Hydrates
    Crystalline compounds (solids) in which ions or molecules of the compounds attach to one or more water molecules.
Card Set
Chemistry ch 8
chapter 8 the mole