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6 Written questions

5 Multiple choice questions

  1. The inward force, or pulltha tend to minimize the surface area of a liquid is called ___
  2. any substance that interferes with the hydrogen bonding between water molecules and thereby reduces surface tension
  3. a heterogeneous micture containing particles that rang in size from 1nm to 1000nm ( smaller than those in suspensions and large than thos in solutions)
  4. the scattering of visible light by colloidal particles
  5. a compound that does not conduct an electric current in either aqueous solution or the molten state. (Molecular compounds such as Sugar, Alchol)

5 True/False questions

  1. weak electrolyteconducts electricity poorly because only a fraction of the solute in the solution exists as ions (ammonia, Mercury (ii) Cloride)

          

  2. strong electrolytea compound that does not conduct an electric current in either aqueous solution or the molten state. (Molecular compounds such as Sugar, Alchol)

          

  3. SolventThe dissolved particles (sugar that is being dissolved in water)

          

  4. hydratea compound that contains water of hydreation ( contained with crystals)

          

  5. Brownian motionThe process by which the positive and negative ions of an ionic solid become surrounded by solvent molecules