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Energy Transformations and Transfers
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Energy Transformations and Transfers

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Questions and Answers

What is the primary focus of thermochemistry?

  • Energy changes during chemical reactions and changes of state (correct)
  • Defining the system
  • Analyzing the surroundings
  • Studying the universe

    • What happens when work is done on the system?

  • Compression occurs (correct)
  • The system releases heat
  • The system absorbs heat
  • Work is done by the system

    • What is the relationship between heat and energy of the system and surroundings?

  • Heat is the only form of energy transfer
  • Heat is only related to the system's energy
  • Heat has no relationship with energy
  • Heat and work have a very important relationship with energy (correct)

    • What is the sign convention for heat when the system releases heat?

    <p>-Q</p> Signup and view all the answers

    What is the study of energy changes that occur during chemical reactions and changes of state?

    <p>Thermochemistry</p> Signup and view all the answers

    What is the system in the context of thermochemistry?

    <p>The part of the universe on which you focus your attention</p> Signup and view all the answers

    What happens when the system absorbs heat?

    <p>The internal energy of the system increases</p> Signup and view all the answers

    What is the symbol for work in thermochemistry?

    <p>W</p> Signup and view all the answers

    What is the relationship between ΔE and w and q?

    <p>ΔE = w+q</p> Signup and view all the answers

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