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7 Written questions

6 Multiple choice questions

  1. Hard: ionic lattice is strong and rigid
  2. Insoluble: ionic compounds tend not to dissolve in nonpolar solvents because the attractions between ions are much more favorable than the attractions among the separated ions and nonpolar solvent molecules.
  3. Malleable and ductile: deforming the solid does not change the environment immediately surrounding each metal core
  4. Good: electrons are delocalized and relatively free to move
  5. Metallic mixtures
  6. Shiny, reflective, lustrous: because electrons move freely throughout the metal. Metals are shiny because of the very strong absorption of light by the delocalised bonding electrons.

6 True/False questions

  1. Conductivity of alloysNon-conductive (insulators): ions are pinned by the rigid lattice.

          

  2. Brittleness of an ionic solidHard: ionic lattice is strong and rigid

          

  3. Vapor pressure an of ionic solidVery Low: due to the strong Coulombic interactions of positive and negative ions arranged in a regular three-dimensional array.

          

  4. Surface chemistry of an alloyAlloy formation sometimes alters the chemistry such as the formation of a chemically inert oxide layer in stainless steel.

          

  5. Conductivity of an ionic solidGood: electrons are delocalized and relatively free to move

          

  6. Malleability and ductility of an ionic solidMalleable and ductile: deforming the solid does not change the environment immediately surrounding each metal core

          

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