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7 Written questions

6 Multiple choice questions

  1. Malleable and ductile: deforming the solid does not change the environment immediately surrounding each metal core
  2. formed between atoms of different radius, where the smaller atoms fill the interstitial spaces between the larger atoms
  3. 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.
  4. Alloy formation sometimes alters the chemistry such as the formation of a chemically inert oxide layer in stainless steel.
  5. Unable to conduct electricity as a solid; soluble in water; aqueous solution conducts electricity
  6. Good: electrons are delocalized and relatively free to move

6 True/False questions

  1. Vapor pressure an of ionic solidHard: ionic lattice is strong and rigid

          

  2. Water solubility of an ionic solidInsoluble: 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. Optical properties of metals (list and reason)When light falls on a metal it is almost totally absorbed since the bonding electrons can jump up to a broad band of energy levels allowing energy changes corresponding to the full range of frequencies in the visible region of the spectrum.

    These currents immediately re-emit the light out of the metal thus providing a strong reflection if the metal surface is smooth.

          

  4. AlloysMetallic mixtures

          

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

          

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