AP Chemistry: Thermodynamics: Homework Help 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. Which of the following concepts best describes a chlorophyll molecule absorbing light and changing it into chemical energy?

Question 2 2. An endothermic reaction is:

Question 3 3. Enthalpy change is

Question 4 4.

The second law of thermodynamics states that:

I. Energy can neither be created nor destroyed

II. All free energy cannot be converted into usable energy

III. The entropy of a system increases over time

Question 5 5. An example of an exothermic reaction is:

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Question 6 6. When a bond forms, energy is given off to the surroundings. This is an example of

Question 7 7. What does it mean when the enthalpy change for a reaction is negative?

AP Chemistry: Thermodynamics: Homework Help 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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