Grade 11 I.B. Chemistry Test 2

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Grade 11 I.B. Chemistry Test 2
2015-10-21 17:38:55
nathan bowman chemistry

Concepts come from Chapter 4 of the I.B. textbook
Show Answers:

  1. VSEPR theory stands for...
    Valence Shell Electron Pair Repulsion
  2. Electron pairs found in the valence shell of atoms repel each other and thus...
    Position themselves as far apart as possible
  3. Repulsion occurs between all electron pairs, bonded and unbonded, but _____ repel more.
    Unbonded pairs
  4. VSEPR theory treats double and single bonds as...
    A single charge centre
  5. The geometrical arrangement of electrons is determined by...
    The amount of charge centers around the central atom
  6. The shape of the molecule is determined by...
    The bonded atoms
  7. Repulsion decreases in the following order:
    • 1. Lone Pair-Lone Pair
    • 2. Lone Pair-Bonded PairĀ 
    • 3. Bonded Pair-Bonded Pair
  8. The definition of a polar molecule is...
    A molecule that has a polar bond and net movement of electrons to one end of the molecule
  9. Intramolecular Force is...
    The attractive force within molecules and compounds
  10. Intramolecular forces affect...
    • - Geometries
    • - Physical Properties
    • - Reactivities
  11. Intermolecular Force is...
    The attractive forces between molecules
  12. The strength of intermolecular forces determine the following physical properties of molecular compounds:
    • Physical State
    • Melting Point
    • Boiling Point
    • Surface Tension
    • Hardness and Texture
    • Solubility in Various Solvents
    • Enthalpy of Vapourization
  13. As intermolecular force increases, ____, _____, and _____ also increase.
    • Melting Point
    • Boiling Point
    • Surface Tension