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TExES Chemistry: Chemical Kinetics 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!

Page 1

Question 1 1. What is a catalyst?

Question 2 2. Which of the following statements is true about the reaction rate constants?

Question 3 3. What is the rate-determining step?

Question 4 4. Suppose you were teaching a science class to middle school students. Because you want to show them an impressive chemical reaction, you decide to dissolve zinc in hydrochloric acid. You add more acid than usual and throw in pieces of zinc. What factor is not going to impact the reaction rate?

Question 5 5. If a scientist induces a chemical reaction, and finds that the reactants and products exist in a single phase, then what did the scientist observe?

Page 2

Question 6 6. What are intermediates?

Question 7 7. If you wanted to decrease the rate of reaction, what action would you need to take?

Question 8 8.

If you get an equilibrium constant of less than 1 for the chemical reaction below, what does that tell you?

sodium + chlorine --> sodium chloride

Question 9 9. Which of the following can impact the reaction rate?

Question 10 10. When two or more reactants combine to form one or more products, what has occurred?

Page 3

Question 11 11. What molecule in our bodies is a catalyst?

Question 12 12. If we know that manganese dioxide is a catalyst in the decomposition of hydrogen peroxide, then how does manganese dioxide affect this reaction?

Question 13 13.

For the following reaction, which substance(s) is (are) the reactant(s)?

sodium + chlorine --> sodium chloride

Question 14 14. If a chemical reaction has an activation energy of 500 J, and its reactants are assembled with 250 J of energy, what will happen? Why?

Question 15 15. When the rate of the forward reaction equals the rate of the reverse reaction, what has occurred?

Page 4

Question 16 16. How is reaction rate measured?

Question 17 17. In order for a chemical reaction to take place, what must occur?

Question 18 18. What is an activated complex?

Question 19 19. Choose the BEST answer that finishes this statement about the collision theory: the speed of chemical reactions is related to:

Question 20 20. The study of reaction rates with regard to chemical reactions is called:

Page 5

Question 21 21. What is a reaction mechanism?

Question 22 22. Which of the following is true about the collision theory?

Question 23 23. What makes the statement 'the presence of a catalyst will slow down a reaction' incorrect?

Question 24 24. What does an increase in temperature do to the reaction rate?

Question 25 25. In the rate law (Rate = k x A), what does the A stand for?

Page 6

Question 26 26. What does Kf/Kr tell you?

TExES Chemistry: Chemical Kinetics 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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