CHOOSE THE LETTER OF THE CORRECT ANSWER, WILL RATE HELPFUL IF MOST QUESTIONS ARE CORRECT

1. Which of the following is NOT a property gas state of matter?*

A. The molecules of gases are compressible.

B. Gases expands to fill the containers.

C. The density of gas is similar to liquid.

D. If one property, such as pressure or volume change, the other properties change as well.

2. Which of the following statements regarding gas pressure is correct? *

A. Gas pressure is commonly measured in units of pounds per square foot.

B. The pressure of air on the outside of a metal can with a low internal pressure is sufficient to crush the can.

C. If the volume of a container filled with a gas increases at constant temperature, the pressure will also increase.

D. If the temperature of a gas sample increases while the gas is held at a constant volume, the pressure will decrease.

3. All of the following are properties of gases, EXCEPT:*

A. mass

B. volume

C. temperature

D. surface area

4. Jane can still pump air in the party balloon even though it is already inflated. What explains this phenomenon?*

A. The air inside the balloon is hot.

B. Balloons are made up of plastic.

C. Air molecules can be compressed.

D. Particles of air move in random motion.

5. Which of the following statements CORRECTLY describes the Boyle's Law?*

A. The volume of gas is directly proportional to the pressure applied to gas.

B. The volume applied to gas is constant even though you exert more pressure on the material.

C. The volume of gas is inversely proportional to pressure applied to gas if temperature is constant.

D. The volume of a fixed amount of gas is directly proportional to temperature if pressure is kept constant.

6. How does the volume of the bubbles exhausted by a scuba diver change as they rise to the surface, assuming that they remain intact?*

A. the pressure increases, so the volume of bubbles increases

B. the pressure decreases, so the volume of bubbles increases

C. the pressure increases, so the volume of bubbles decreases

D. the pressure decreases, so the volume of bubbles increases

7. A gas occupying a 2.0 L flask at 1 atm is allowed to expand to a volume of 6 L. Calculate its final pressure.*

A. 3 atm

B. 12 atm

C. 0.33 atm

D. 2 atm

8. Records show that the incidence of tire explosion is high during the summer season. Which of the following gives the best explanation for this observation?*

A. There are more travelers during summer vacation.

B. High temperature during the summer season causes the air inside the tire to expand.

C. Vehicles' tires are not well maintained.

D. There is too much air inside the tires.

9. A 2.50-L volume of hydrogen measured at -196 C is warmed to 100 C. Calculate the final volume of the gas assuming there is no change in pressure.*

A. 12.1 L

B. 0.516 L

C. 13 L

D. 0.6 L

10. Determine what will happen to the temperature of a confined gas as the pressure decreases.*

A. The gas temperature stays the same.

B. The gas temperature decreases.

C. The gas temperature increases.

D. There is not enough data.

11. Gay-Lussac's law states that the pressure of a gas is directly proportional with its temperature at constant volume. What is the meaning of the term "directly proportional?"*

A. As the pressure increases, the temperature of a gas increases

B. As the pressure increases, the temperature of a gas decreases

C. As the pressure increases, the temperature of a gas remains the same.

D. No change in the pressure and temperature of a gas.

12. A chamber with a fixed amount of gas has a pressure of 140 atm and a temperature of 60C, if the temperature is raised 40C, what is the new pressure of the chamber?*

A. 132 atm

B. 39 atm

C. 140 atm

D. 157 atm

13. What do you expect to happen to the volume of a gas if its pressure is doubled and its temperature is reduced to half?*

A. Its volume is increased.

B. Its volume is doubled.

C. Its volume remains unchanged.

D. Its volume is decreased.

14. Which gas law is applied for refrigeration and in maintaining the proper air pressure in car tires?*

A. Boyle's Law

B. Gay-Lussac's Law

C. Combined Gas Law

D. Ideal Gas Law

15. A balloon that is 100.21 L at 21 C and 0.981 atm is released and just barely clears the top of Mount Arayat. If the final volume of the balloon is 144.53 L at a temperature of 5.24 C, what is the pressure experienced by the balloon as it clears Mount Arayat?*

A. 2.03 atm

B. 0.68 atm

C. 0.644 atm

D. 0.719 atm

16. How will you describe the relationship of temperature and pressure in the item number 15?*

A. As the temperature decreases the pressure increases

B. As the temperature decreases the pressure decreases

C. As the temperature decreases the pressure remains the same

D. All options are correct

17. Which gas law is applied when you blow up a balloon causing the addition of gas molecules into it and increasing its volume?*

A. Combined Gas Law

B. Charles' Law

C. Avogadro's Law

D. Ideal Gas Law

18. A balloon has been filled to a volume of 1.90L with 0.0920mol of helium gas. If 0.0210mol of additional helium is added to the balloon while the temperature and pressure are held constant, what is the new volume of the balloon?*

A. 0.43 L

B. 2.33 L

C. 8.32 L

D. 1.55 L

19. Each container with varying volumes has 1.0 mole of oxygen gas at 303 K. In which container will pressure be the lowest?*