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5 Written questions

5 Matching questions

  1. Universe
  2. Spontaneous Process
  3. Joule
  4. Thermochemistry
  5. Surroundings
  1. a SI unit of heat and energy (.2390 cals)
  2. b everything in the universe other than the system
  3. c system + surroundings
  4. d the study of heat changes that accompany chemical reactions and phase changes
  5. e a physical or chemical change that occurs with no outside intervention

5 Multiple choice questions

  1. states that spontaneous processes always proceed in such a way that the entropy of the universe increases
  2. ability to do work or produce heat
  3. in any chemical reaction or physical process, energy can be converted from one form to another, but it is neither created nor destroyed
  4. amount of heat required to raise the temp of one gram of that substance by one degree Celsius
  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. Hess's Lawenergy that is in the process of flowing from a warmer object to a cooler object.


  2. Free Energyability to do work or produce heat


  3. Enthalpy (H)heat content of a system at a constant pressure.


  4. Chemical Potential EnergyGibbs free energy (Gsystem) - energy that is available to do work - useful energy


  5. Heatability to do work or produce heat