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AP Chemistry: Thermodynamics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Enthalpy change is

Question 2 2. The enthalpy change of a reaction can be calculated using the following equation:

Question 3 3. Using the table of Average Bond Energies in the lesson, which bond is the strongest?

Question 4 4. For a reaction to be spontaneous, the sign of delta G is:

Question 5 5. The entropy of a system decreases when:

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Question 6 6. Which one of the following is the correct equation linking free energy and the cell potential?

Question 7 7. What is the main principle of the First Law of Thermodynamics?

Question 8 8. For a reaction to be spontaneous, the sign of delta G must be:

Question 9 9. The method by which nutritionists determine the energy content of food is known as the _____.

Question 10 10. What is oxidation?

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Question 11 11. Which of the following is another term for the heat of reaction?

Question 12 12. The equation for calculating Gibbs Free Energy is:

Question 13 13. An endothermic reaction is:

Question 14 14. Why is work a path function?

Question 15 15. Which of the following is NOT a state function?

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Question 16 16. The Activation Energy of a reaction

Question 17 17. Why can it never be assumed that all spontaneous processes happen quickly?

Question 18 18. The science of measuring heat transfer when a substance gives out or absorbs heat is known as _____, while the device that is used to experimentally determine the heat associated with a chemical reaction is called a _____.

Question 19 19. What does a positive cell potential tell you?

Question 20 20. Why are bodies of water, such as lakes, relatively slow to respond to heating or cooling compared to the land surrounding them?

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Question 21 21. Using water as an example, how is the spontaneity of a process affected by temperature?

Question 22 22. Which of the following has a positive entropy change?

Question 23 23. When something is moving it has _____ energy.

Question 24 24. Which of the following best describes a spontaneous reaction?

Question 25 25. A(n) _____ reaction absorbs heat from the surroundings, while an _____ reaction results in heat flowing out of the system.

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Question 26 26. What does it mean when the enthalpy change for a reaction is negative?

Question 27 27. How much energy does it take to heat 75 grams of water from 50 to 70°C?

Question 28 28. _____ is a measure of the random motion of particles. _____ is the transfer of energy between two objects due to temperature difference.

Question 29 29. Which chemical bond has the highest bond energy?

Question 30 30. Which of the following is FALSE of Hess's Law?

AP Chemistry: Thermodynamics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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