Thermochemistry Vocabulary

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  1. 1. The measured energy absorbed or released as heat in a chemical or physical change.
  2. 4. Energy absorbed into the system as heat (figure 17.3).
  3. 8. A measure of the average kinetic energy of the particles in a sample of matter.
  4. 9. Energy is released from the system as heat (figure 17.2).
  5. 10. complex A transitional structure that results from an effective collision and that persists while old bonds are breaking and new bonds are forming.
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  1. 2. The study of the transfer of energy as heat that accompany chemical reactions and physical changes.
  2. 3. energy The minimum energy required to transform the reactants into an activated complex.
  3. 5. The unit of heat as well as all other forms of energy.
  4. 6. heat. The amount of energy required to raise one gram of a substance by one Celsius degree or one Kelvin.
  5. 7. The energy transferred between samples of matter because of a difference in their temperature.