NMTA Middle Grades General Science (204): Practice & Study Guide  /  Science Courses

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Rates of Reaction 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 makes the statement 'the presence of a catalyst will slow down a reaction' incorrect?

Question 2 2. If the exponential factor is close to 1, what is known about the activation energy and temperature?

Question 3 3. How is reaction rate measured?

Question 4 4. How does an increase in temperature affect the rate of a reaction?

Question 5 5. How might the exponential factor equal one?

Page 2

Question 6 6. If a scientist is trying to determine the reaction order for a given reaction, then what's the most effective means to figure it out?

Question 7 7. What is the rate law?

Question 8 8. When a bond forms, energy is given off to the surroundings. This is an example of

Question 9 9. In the reaction A = B, if the rate quadruples for every doubling of A, then what is the reaction order?

Question 10 10. What is the frequency factor?

Page 3

Question 11 11. What does it mean when the enthalpy change for a reaction is negative?

Question 12 12. What is the Arrhenius equation?

Question 13 13. An example of an exothermic reaction is:

Question 14 14. Enthalpy change is

Question 15 15. What does the m stand for in the rate law equation?

Page 4

Question 16 16. What does the k stand for in the rate law equation?

Question 17 17. An endothermic reaction is:

Question 18 18. What does an increase in temperature do to the reaction rate?

Question 19 19. If you wanted to decrease the rate of reaction, what action would you need to take?

Question 20 20. 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?

Rates of Reaction 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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