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TExES Science 7-12: Properties of Gases 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. A gas is collected by water displacement at 25 degrees Celsius. The vapor pressure of water at that temperature is 24 mmHg. If the atmospheric pressure is 800 mmHg, then what is the pressure of the dry gas you collected?

Question 2 2. If you add a gas to a container with a fixed volume, what happens to the amount of pressure in that container?

Question 3 3. Standard temperature and standard pressure refer to:

Question 4 4. 1000 mL of a gas at 15 atm is compressed to 500 mL. What is its new pressure?

Question 5 5. Why can't all of the gas particles in a container have very high or very low speeds?

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Question 6 6. What is the equation of the ideal gas law?

Question 7 7. A bag of chips has a volume of 2.0 L at 760 torr of pressure. What is its volume in an airplane flying at a high altitude with a pressure of 550 torr?

Question 8 8. A sample of an ideal gas is heated from 200 degrees Celsius to 400 degrees Celsius. If the initial pressure is 45 torr, then what is the final pressure?

Question 9 9. The ideal gas constant, R, can be found using which of the following equations?

Question 10 10. The _____ states that gas particles are constantly moving in rapid, random movement.

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Question 11 11. A 4 L sample of gas is heated from 20 K to 200 K. Its initial pressure was 60 torr. What is its final pressure?

Question 12 12. To use Gay-Lussac's Law, which of the following needs to remain constant?

Question 13 13. What does it mean when a collision is elastic?

Question 14 14. If someone is measuring pressure, they might use any of the following units EXCEPT _____.

Question 15 15. At constant pressure, what happens to the volume of a gas when the absolute temperature doubles?

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Question 16 16. Assuming the volume is held constant, what happens to the pressure of a gas when the absolute temperature doubles?

Question 17 17. What is the equation that defines density?

Question 18 18. What advantage does the van der Waals equation give us over the ideal gas law?

Question 19 19. What is the name of the sum of atomic masses (for molecular compounds) in a chemical formula?

Question 20 20. A balloon has an initial volume of 150 mL at 25 degrees Celsius. If the temperature is increased to 75 degrees Celsius, what is the final volume?

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Question 21 21. Why does the probability curve become narrower when gas particles are more massive?

Question 22 22. Why does the volume of gas particles become important when the volume of the container is decreased?

Question 23 23. According to the kinetic molecular theory, temperature is directly proportional to _____.

Question 24 24. An expandable container is holding 0.75 moles of argon with a volume of 5.0 L. Assuming the temperature and pressure are held constant, how many moles of argon would be needed to increase the volume to 7.0 L?

Question 25 25. Mark has unknowingly driven over a very large nail when exiting his work parking lot. He has a long commute home, and by the time he arrives he will have a flat tire. The air that is slowly escaping from the hole in his tire is an example of _____.

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Question 26 26. How does a higher temperature affect the probability distribution curve of gas particles?

Question 27 27. Which of the following is TRUE about ideal gas particles?

Question 28 28. What is mass?

Question 29 29. A container has a volume of 53.9 L. Assuming it is at STP, how many moles of gas particles does it contain?

Question 30 30. 1000 mL of a gas is cooled from 500 K to 250 K. What is its final volume?

TExES Science 7-12: Properties of Gases 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!

TExES Science 7-12 (236): Practice & Study Guide  /  Science Courses
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