This video is about Thermochemistry and explains in details the Nature of  Energy. After watching this video, you should be able to:

  • Discuss and define the following terms:

  • Thermodynamics,
  • Energy,
  • Kinetic Energy,
  • Potential Energy,
  • Chemical Energy,
  • Heat,
  • Work,
  • system,
  • surrounding and
  • universe.
    • Understand that an exothermic reaction is a reactions in which energy flows out of the system to the surrounding.
    • Understand that an endothermic reaction is a reactions in which energy is absorbed from the surroundings
    • Note that work is negative if the system does work (system expands) and it is positive if work is done on the system (system contracts).
    • State the first law of thermodynamics (Energy is conserved).
    • Know that the change in internal energy (DeltaE) of a given system is the sum of heat (q) and work (w): DeltaE=q + w.
    • Apply the sign conventions for q, w, and E
    • Relate the sign internal energy (DeltaE)

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