Chemistry Lect 1

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Author:
Anonymous
ID:
58923
Filename:
Chemistry Lect 1
Updated:
2011-01-10 01:03:35
Tags:
Atoms Molecules Quantum Mechanics
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Description:
Atoms, Molecules, and Quantum Mechanics
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  1. AZX
    • A: mass number (prots and neuts)
    • Z: atomic number (prots)
    • X: element symbol
  2. How is 1 mol measured in 12C?
    1 mol = # of 'C' atoms in 12g of 12C
  3. Metals
    • Under the metaloid staircase
    • Tend to loose e-s
    • Solids at room temp (except mercury)
    • Form ionic oxides
  4. Non-Metals
    • Lower m.p. than metals
    • Form covalent oxides
    • Above metaloid staircase
  5. Periodic Trends: Increase L --> R and Down --> Up
    • Energy of Ionization - E nec. to detatch an e-
    • Electronegativity - tend to attract an e- in a shared bond
    • Electron Affinity - willingness to accept an e-
  6. Periodic Trends: Increase R --> L and Up --> Down
    • Atomic Radius
    • Metallic Character
  7. Energy is _____ by forming a bond.
    lowered
  8. Empirical vs. Molecular Formula
    Empirical is the reduced form
  9. Reaction Types
    • Combustion
    • Single Displacement
    • Double Displacement
    • Combination
    • Redox
    • Metathesis
  10. Cations vs. Anions
    • Cations - Pos (+)
    • Anions - Neg (-)
  11. Naming Ionic Compounds:
    • Simple Anions: -ide (i.e. hydride H-, hydroxide OH-)
    • From Least "O"s to most: hypo- -ite, -ite, -ate, per- -ate
    • ClO-: hypochlorite
    • ClO2-: chlorite
    • ClO3-: chlorate
    • ClO4-: perchlorate
  12. Naming Acids
    • Based on the corresponding anion
    • If it ends in -ide: hydro- -ic
    • More "O"s: -ic
    • Less "O"s: -ous
  13. Helsenberg Uncertainty:
    The more we know about the momentum of a particle the less we know about its position
  14. Quantum Numbers:
  15. Hund's Rule:
    • e-s will not fill any orbital in the same subshell until all the orbitals contain at least 1 e-
    • all the unpaired e-s will have parallel spins
  16. How to write out quantum numbers:

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