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5 Written questions

5 Matching questions

  1. Joule
  2. Enthalpy of combustion
  3. Universe
  4. Calorimeter
  5. Law of Disorder
  1. a states that spontaneous processes always proceed in such a way that the entropy of the universe increases
  2. b system + surroundings
  3. c insulated device used for measuring the amount of heat lost or gained during a chemical or physical process
  4. d of a substance is the enthalpy change for the complete burning of one mole of the substance
  5. e SI unit of heat and energy (.2390 cals)

5 Multiple choice questions

  1. energy stored in a compound because of its composition
  2. the change in enthalpy for a reaction
  3. amount of heat required to raise the temp of one gram of that substance by one degree Celsius
  4. everything in the universe other than the system
  5. balanced chemical equation that includes the physical states of all reactants and products, and the energy change, usually expressed as the change in enthalpy

5 True/False questions

  1. Molar Enthalpy of Fusionthe heat required to vaporize one mole of a liquid

          

  2. Molar Enthalpy of vaporizationheat required to melt one mole of a solid substance

          

  3. Thermochemistrythe study of heat changes that accompany chemical reactions and phase changes

          

  4. Free Energyability to do work or produce heat

          

  5. Law of Conservation of Energystates that spontaneous processes always proceed in such a way that the entropy of the universe increases