Chapter 12 Practice Test

# Chapter 12 Practice Test - Chapter 12 Practice Test...

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Chapter 12 Practice Test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Pressure is the force per unit a. volume. c. length. b. surface area. d. depth. ____ 2. What is the definition of pressure? a. b. c. pressure = force × area d. ____ 3. Why does a can collapse when a vacuum pump removes air from the can? a. The inside and outside forces balance out and crush the can. b. The unbalanced outside force from atmospheric pressure crushes the can. c. The atmosphere exerts pressure on the inside of the can and crushes it. d. The vacuum pump creates a force that crushes the can. ____ 4. Convert the pressure 0.75 atm to mm Hg. a. 101.325 mm Hg c. 570 mm Hg b. 430 mm Hg d. 760 mm Hg ____ 5. Convert the pressure 0.840 atm to mm Hg. a. 365 mm Hg c. 638 mm Hg b. 437 mm Hg d. 780 mm Hg ____ 6. Convert the pressure 0.600 atm to mm Hg. a. 325 mm Hg c. 572 mm Hg b. 456 mm Hg d. 708 mm Hg ____ 7. Convert the pressure 2.50 atm to kPa. a. 1 kPa c. 760 kPa b. 253 kPa d. 1000 kPa ____ 8. Convert the pressure 1.30 atm to kPa. a. 2 kPa c. 132 kPa b. 115 kPa d. 245 kPa ____ 9. Standard temperature is exactly a. 100ºC. c. 0ºC. b. 273ºC. d. 0 K. ____ 10. Standard pressure is exactly a. 1 atm. c. 101.325 atm. b. 760 atm. d. 101 atm. ____ 11. If the temperature of a fixed quantity and volume of gas changes, what also changes? a. pressure c. mass b. density d. formula

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____ 12. To study the relationship between the temperature and volume of a gas, which factor must be held constant? a. elasticity c. kinetic energy b. fluidity d. pressure ____ 13. If the temperature of a fixed quantity of gas decreases and the pressure remains unchanged, a. its volume increases. c. its volume decreases. b. its volume is unchanged. d. its density decreases. ____ 14. If the temperature remains constant, V and P represent the original volume and pressure, and V' and P' represent the new volume and pressure, what is the mathematical expression for Boyle's law? a. P'V = V'P c. V'P' = VP b. VV' = PP' d. ____ 15. Pressure and volume changes at a constant temperature can be calculated using a. Boyle's law. c. Kelvin's law. b. Charles's law. d. Dalton's law. ____ 16. The volume of a gas is 400.0 mL when the pressure is 1.00 atm. At the same temperature, what is the pressure at which the volume of the gas is 2.0 L? a. 0.5 atm c. 0.20 atm b. 5.0 atm d. 800 atm ____ 17. The pressure of a sample of helium is 2.0 atm in a 200-mL container. If the container is compressed to 10 mL without changing the temperature, what is the new pressure? a. 200 atm c. 100 atm b. 0.10 atm d. 40. atm ____ 18. A sample of oxygen occupies 560. mL when the pressure is 800.00 mm Hg. At constant temperature, what volume does the gas occupy when the pressure decreases to 700.0 mm Hg? a.
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Chapter 12 Practice Test - Chapter 12 Practice Test...

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