Direction: Write the letter of the correct answer.
1. Which example has particles that can be drawn closer to occupy smaller volume?
a. fruit juice
b. block of wood
c. air inside the syringe
d. ice cube
2. Which of the following phenomena does NOT involve the application of gas pressure?
a. burning fuels
b. falling leaves
c. vulcanizing tire
d. rising hot air balloons
3. Last summer vacation, the Cruz family decided to go to Pagudpod, Ilocos Norte to have a beach party. On their way to Ilocos, all of them were surprised when the tire suddenly exploded. What is the probable explanation for the blown out tire during a long summer drive?
a. High temperature causes a decrease in volume.
b. The amount of the gases inside the tire is increased.
c. The mass of the gases inside the tire increases causing a blown up tire.
d. The volume of gases increases as the temperature increases, causing a blown up tire.
4. How can you possibly prove that gases have negligible mass?
a. Put a balloon in a digital balance before and after you fill it with air.
b. Feel the weight of the samples on both hands.
c. ask two persons to hold a box
d. support your claim of through equation
5. Jane can still pump air in the party balloon even though it is already inflated. What explains this phenomenon?
a. balloons look better if its size is bigger
b. balloons are made up of plastic
c. the air inside the balloon is hot
d. air molecules can be compressed
6. What is most likely to happen when an aerosol can is heated?
a. the can will be deformed
b. the can will stay the same
c. the can will eventually explode
d. the can will tarnish
7. Which of the following phenomena best illustrates Charles’ Law?
a. carbon dioxide being dissolved in water
b. expansion of the balloon as it is being submerged in hot water
c. breathing apparatus being used by a patient
d. leavening agent causing the fluffiness of cake products
8. Which of the following samples is highly compressible at high pressure and expandable at high temperature?
a. oxygen gas
b. aluminium sheet
c. water
d. ice
9. Which is most likely to happen when a closed vessel filled with gas is shaken for 2 minutes?
a. the temperature inside the vessel increases
b. the pressure inside the vessel increase
c. the temperature and pressure inside the vessel increase
d. both the temperature and pressure inside the vessel increase
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 no enough data
10. Gab wants to have a portable oxygen tank. A 5.00 liter oxygen gas exerts a pressure of 1.00 atmosphere. How much pressure is needed for this gas to be compressed in a 2.00 liter cylinder, provided there is no temperature change?
a. 3.0 atm
b. 2.5 atm
c. 2.0 atm
d. 1.5 atm
11. A balloon with a volume of 200 mL at 30°C is submerged in hot water to obtain a temperature of 50°C. Find out what will happen to the volume of the balloon, provided the pressure remains the same.
a. the volume of the balloon will become higher than 200 mL
b. the volume of the balloon will become lower than 200 mL
c. the volume of the balloon will stay the same
d. there is no enough data
12. A 2.0 g (approximately 0.045 mole) sample of dry ice (solid carbon dioxide) is placed in an evacuated 3.5 L vessel at 30°C. Compute for the pressure inside the vessel after all the dry ice has been converted to carbon dioxide gas. (R=0.0821 L. atm/mol.K)
a. 0.32 atm
b. 0.45 atm
c. 0.67 atm
d. 1.0 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
For numbers 14 to16, the choices are:
a. Boyle’s Law
b. Charles’ Law
c. Combined Gas Law
d. Ideal Gas Law
14. What law explains the mechanism of gas compressor?
15. What gas law best explains the explosion of the heated aerosol container?
16. What gas law explains the relationship among the volume, pressure, temperature, and the number of moles of gases?
17. What kind of movement is exhibited by gas molecules?
a. vibrational movement
b. rotational movement
c. translational movement
d. combination of a, b and c
18. How does the temperature affect the average kinetic energy of gas molecules?
a. as the temperature decreases the average kinetic energy of gas molecules decreases
b. as the temperature decreases the average kinetic energy of gas molecules increases
c. as the temperature decreases the average kinetic energy of gas molecules remains the same
d. as the temperature decreases the average kinetic energy of gas molecules fluctuates
19. What will happen to the gas pressure as the temperature increases amount and volume of the gas are kept constant?
a. the gas pressure remains the same
b. the gas pressure decreases
c. the gas pressure increases
d. there is no significant effect
20. How will you represent the molecules of carbon dioxide at 30°C?
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