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 (C)</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 (C)</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 (B)</p> Signup and view all the answers

What happens when the system absorbs heat?

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

What is the symbol for work in thermochemistry?

<p>W (D)</p> Signup and view all the answers

What is the relationship between ΔE and w and q?

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

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