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6 Written questions

5 Multiple choice questions

  1. a mixture from which partilces settle out ipon standing
  2. nearly all the dissolved compounds exist as ions ( soluble salts, inorganic acids, inorganic bases)
  3. water that contains dissolved substances
  4. any substance that interferes with the hydrogen bonding between water molecules and thereby reduces surface tension
  5. conducts electricity poorly because only a fraction of the solute in the solution exists as ions (ammonia, Mercury (ii) Cloride)

5 True/False questions

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

          

  2. Brownian motionThe chaotic movement of colloidal particles caused by collisions of the molecules of the dispersion medium with the small, dispersed colloidal particles.

          

  3. electrolytea compound that conducts an electric rurent when it is in anaqueuous solution or in the molten state. (Ionic compounds are _______)

          

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

          

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