Mr.Matthews Chemistry course
Chemistry is an inquiry based class that focuses on the states and properties of matter, atomic structure, chemical reactions, solutions, acids and bases, and periodicity. The course utilizes a hands-on approach to help students come to understand key physical concepts, which make sense of everyday phenomena. Students will learn through a variety of instructional methods including laboratories, projects, demonstrations, lecture, problem-solving, outside research and group interactions. Topics studied are guided by the Michigan Science Frameworks.
Listed Below is an Archive of our classwork.
Review as often as needed.
Assessment
Gas Laws Test
Chapter: Gases
In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
_____ 1. The SI unit of pressure is
a. newtons.
b. pascals.
c. atmospheres.
d. torr.
_____ 2. Most manometers and barometers contain
a. water.
b. alcohol.
c. mercury.
d. oil.
_____ 3. Pressure =
a. force ´ area
b.
c.
d.
_____ 4. The unit of pressure known as the pascal is equal to
a. 14.700 psi.
b. 760 mm Hg.
c. 1 atm.
d. 1 N/m2.
_____ 5. Air is about 78% nitrogen, 21% oxygen, and 1% other gases. After all the oxygen is removed from a sample of air in a glass tube and the temperature remains constant, the pressure exerted by the remaining air
a. does not change.
b. is reduced by 78%.
c. is reduced by 50%.
d. is reduced by 21%.
Chapter Test A, continued
_____ 6. Which graph illustrates Boyle’s law?
a.
b.
c.
d. None of the graphs
Chapter Test A, continued
_____ 7. The law that relates the temperature and volume of a gas to each other is known as
a. Charles’s law.
b. Boyle’s law.
c. Gay-Lussac’s law.
d. Graham’s law.
_____ 8. Gay-Lussac recognized that at constant temperature and pressure, the volumes of gaseous reactants and products
a. can be expressed as ratios of small whole numbers.
b. add up to 22.4 L.
c. equal R.
d. always equal 1 L.
_____ 9. Which of the following expressions relates the kelvin and Celsius temperature scales?
a. K = 273.15 + °C
b. K = -273.15 + °C
c. °C = 273.15 K
d. K = 273.15°C
_____ 10. At constant temperature and pressure, gas volume is directly proportional to the
a. molar mass of the gas.
b. number of moles of gas.
c. density of the gas at STP.
d. rate of diffusion.
_____ 11. What is the conversion factor that should be used to determine the number of moles of a gas at STP when you are given the volume of the gas?
a.
b.
c.
d.
Chapter Test A, continued
_____ 12. The ratios of the volumes of the gaseous reactants and products in a chemical reaction at constant temperature and pressure can be determined from the
a. formulas.
b. coefficients in the balanced equation.
c. subscripts in the balanced equation.
d. gas constant.
_____ 13. For the balanced equation 2CO(g) + O2(g) ® 2CO2(g), the ratio 2:1:2 refers to all the following except
a. volumes.
b. moles.
c. molecules.
d. pressures.
_____ 14. The law of combining volumes applies only to gas volumes
a. measured at constant temperature and pressure.
b. that equal 1 L.
c. that equal 22.4 L.
d. measured at STP.
_____ 15. According to Avogadro’s law, 1 L of H2(g) and 1 L of O2(g) at the same temperature and pressure
a. have the same mass.
b. have the same molar mass.
c. contain 1 mol of gas each.
d. contain equal numbers of molecules.
_____ 16. The passage of gas particles through a small opening is called
a. diffusion.
b. pressurization.
c. effusion.
d. vaporization.
_____ 17. Which of these gases effuses the slowest under the same conditions?
a. Ne
b. NH3
c. NO2
d. CO2
Chapter Test A, continued
_____ 18. In the figure above, the curve that represents an ideal gas is curve
a. A.
b. B.
c. C.
d. D.
_____ 19. Gases tend to deviate from the ideal gas law at
a. high pressures.
b. low pressures.
c. high temperatures.
d. low pressures and high temperatures.
_____ 20. A 10.2-L canister of oxygen gas contains 58.6 mol of gas at a temperature of 25°C. What is the pressure of the gas?
a. 7.11 ´ 10-3 atm
b. 8.48 ´ 10-3 atm
c. 11.8 atm
d. 141 atm
_____ 21. Hydrogen gas is collected by water displacement. If the barometric pressure is 752.0 torr and the water vapor pressure is 17.5 torr, what is the partial pressure of the hydrogen collected?
a. 769.5 torr
b. 752.0 torr
c. 734.5 torr
d. 17.5 torr
Chapter Test A, continued
_____ 22. A sample of helium gas has a volume of 250.0 mL when its pressure is 0.935 atm. If the temperature remains constant, what will the pressure of the gas be when it has a volume of 175.0 mL?
a. 1.34 atm
b. 1.00 atm
c. 0.935 atm
d. 0.654 atm
_____ 23. You collect 552 mL of argon gas at 23.0°C. What volume will the gas occupy at 46.0°C if the pressure remains constant?
a. 276 mL
b. 512 mL
c. 595 mL
d. 1104 mL
_____ 24. The gas in an aerosol container is at a pressure of 3.50 atm at 24.0°C. The caution on the container warns against storing it at temperatures above 95°C. What would the gas pressure in the container be at 95°C?
a. 4.34 atm
b. 8.68 atm
c. 13.9 atm
d. 84.0 atm
_____ 25. What is the ratio of the rate of effusion of helium (atomic mass 4.00 amu) to that of oxygen gas (molecular mass 32.0 amu)?
a. 0.125
b. 0.354
c. 2.83
d. 8.00
Gas Laws Test
Chapter: Gases
In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
_____ 1. The SI unit of pressure is
a. newtons.
b. pascals.
c. atmospheres.
d. torr.
_____ 2. Most manometers and barometers contain
a. water.
b. alcohol.
c. mercury.
d. oil.
_____ 3. Pressure =
a. force ´ area
b.
c.
d.
_____ 4. The unit of pressure known as the pascal is equal to
a. 14.700 psi.
b. 760 mm Hg.
c. 1 atm.
d. 1 N/m2.
_____ 5. Air is about 78% nitrogen, 21% oxygen, and 1% other gases. After all the oxygen is removed from a sample of air in a glass tube and the temperature remains constant, the pressure exerted by the remaining air
a. does not change.
b. is reduced by 78%.
c. is reduced by 50%.
d. is reduced by 21%.
Chapter Test A, continued
_____ 6. Which graph illustrates Boyle’s law?
a.
b.
c.
d. None of the graphs
Chapter Test A, continued
_____ 7. The law that relates the temperature and volume of a gas to each other is known as
a. Charles’s law.
b. Boyle’s law.
c. Gay-Lussac’s law.
d. Graham’s law.
_____ 8. Gay-Lussac recognized that at constant temperature and pressure, the volumes of gaseous reactants and products
a. can be expressed as ratios of small whole numbers.
b. add up to 22.4 L.
c. equal R.
d. always equal 1 L.
_____ 9. Which of the following expressions relates the kelvin and Celsius temperature scales?
a. K = 273.15 + °C
b. K = -273.15 + °C
c. °C = 273.15 K
d. K = 273.15°C
_____ 10. At constant temperature and pressure, gas volume is directly proportional to the
a. molar mass of the gas.
b. number of moles of gas.
c. density of the gas at STP.
d. rate of diffusion.
_____ 11. What is the conversion factor that should be used to determine the number of moles of a gas at STP when you are given the volume of the gas?
a.
b.
c.
d.
Chapter Test A, continued
_____ 12. The ratios of the volumes of the gaseous reactants and products in a chemical reaction at constant temperature and pressure can be determined from the
a. formulas.
b. coefficients in the balanced equation.
c. subscripts in the balanced equation.
d. gas constant.
_____ 13. For the balanced equation 2CO(g) + O2(g) ® 2CO2(g), the ratio 2:1:2 refers to all the following except
a. volumes.
b. moles.
c. molecules.
d. pressures.
_____ 14. The law of combining volumes applies only to gas volumes
a. measured at constant temperature and pressure.
b. that equal 1 L.
c. that equal 22.4 L.
d. measured at STP.
_____ 15. According to Avogadro’s law, 1 L of H2(g) and 1 L of O2(g) at the same temperature and pressure
a. have the same mass.
b. have the same molar mass.
c. contain 1 mol of gas each.
d. contain equal numbers of molecules.
_____ 16. The passage of gas particles through a small opening is called
a. diffusion.
b. pressurization.
c. effusion.
d. vaporization.
_____ 17. Which of these gases effuses the slowest under the same conditions?
a. Ne
b. NH3
c. NO2
d. CO2
Chapter Test A, continued
_____ 18. In the figure above, the curve that represents an ideal gas is curve
a. A.
b. B.
c. C.
d. D.
_____ 19. Gases tend to deviate from the ideal gas law at
a. high pressures.
b. low pressures.
c. high temperatures.
d. low pressures and high temperatures.
_____ 20. A 10.2-L canister of oxygen gas contains 58.6 mol of gas at a temperature of 25°C. What is the pressure of the gas?
a. 7.11 ´ 10-3 atm
b. 8.48 ´ 10-3 atm
c. 11.8 atm
d. 141 atm
_____ 21. Hydrogen gas is collected by water displacement. If the barometric pressure is 752.0 torr and the water vapor pressure is 17.5 torr, what is the partial pressure of the hydrogen collected?
a. 769.5 torr
b. 752.0 torr
c. 734.5 torr
d. 17.5 torr
Chapter Test A, continued
_____ 22. A sample of helium gas has a volume of 250.0 mL when its pressure is 0.935 atm. If the temperature remains constant, what will the pressure of the gas be when it has a volume of 175.0 mL?
a. 1.34 atm
b. 1.00 atm
c. 0.935 atm
d. 0.654 atm
_____ 23. You collect 552 mL of argon gas at 23.0°C. What volume will the gas occupy at 46.0°C if the pressure remains constant?
a. 276 mL
b. 512 mL
c. 595 mL
d. 1104 mL
_____ 24. The gas in an aerosol container is at a pressure of 3.50 atm at 24.0°C. The caution on the container warns against storing it at temperatures above 95°C. What would the gas pressure in the container be at 95°C?
a. 4.34 atm
b. 8.68 atm
c. 13.9 atm
d. 84.0 atm
_____ 25. What is the ratio of the rate of effusion of helium (atomic mass 4.00 amu) to that of oxygen gas (molecular mass 32.0 amu)?
a. 0.125
b. 0.354
c. 2.83
d. 8.00
Test Review For Wed March14(Link if the above did not work)
http://www.proprofs.com/quiz-school/story.php?title=section-c-review-pg153179
Below are links to 3rd party (not created by me, Mr. Matthews) web sites that contain practice multiple choice questions. Please note that the chapters listed on each of the web sites do not match up with our textbook chapters. Also note that we have not covered all of the questions on these web sites. If you are not sure if we have covered a question or topic, have any questions in general, or a link does not work, please email me at:[email protected]
Measurements and Calculations Review Questions #1 Measurements and Calculations Review Questions #2 Atomic Structure Review Questions #1 Atomic Structure Review Questions #2 Atomic Structure Review Questions #3 Electrons and Orbitals Review Questions #1 Periodic Table Review Questions #1 Periodic Table Review Questions #2 Periodic Table Review Questions #3 Bonding Review Questions #1 Bonding Review Questions #2 Bonding Review Questions #3 Lab Equipment Questions
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_http://www.proprofs.com/quiz-school/story.php?title=element-quiz-136
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