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5 Written questions

5 Matching questions

  1. Evaporative Cooling
  2. Hydrogen Ion
  3. Molecular Mass
  4. Adhesion
  5. Kinetic Energy
  1. a The cooling of the surface of a liquid during evaporation due to the primary vaporization of molecules with higher levels of kinetic energy (heat).
  2. b The total mass of all the atoms in a given moleculs
  3. c The energy of motion
  4. d An individual proton (H+)
  5. e The clinging of a substance to another; caused by hydrogen bonding

5 Multiple choice questions

  1. A substance that minimizes changes in the concentrations of H+ and OH- in a solution.
  2. A liquid that is a completely homogenous mixture of two or more substances
  3. The amount of heat that must must be absorbed or lost by a substance in order to change its temperature by 1ºC.
  4. A water molecule lacking an individual proton (OH-)
  5. A sphere of water molecules surrounding individual ions of a salt crystal or charged atoms of a polar molecule in order to dissolve it.

5 True/False questions

  1. AcidThe solid form of water; floats on liquid water due to the expansion and crystallization of its component molecules.

          

  2. TemperatureA measure of the total amount of kinetic energy- due to molecular motion- in a body of matter.

          

  3. CalorieThe amount of heat required to raise the temperature of 1kg of water by 1ºC (1000 cal)

          

  4. Acid PrecipitationRain/snow/fog with a pH lower than pH 5.6

          

  5. MolarityThe number of moles of solute per liter of solution

          

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