4q Science 10 PT

Republic of the Philippines
DEPARTMENT OF EDUCATION
FOURTH QUARTER EXAMINATION IN SCIENCE 10

SY 2022-2023
Name: ________________________________ Score:____________
Directions: Read the questions/statements carefully. Write the letter of your answer in CAPITAL LETTERS only
1. Which of the following is a correct statement about the gas laws?

a. Breathing illustrates Boyle’s law.
b. Charles’ law illustrates that the volume of gas expands when temperature becomes higher.
c. Avogadro’s law illustrates that the volume of gas is proportional to its mole number or say its quantity or amount.
d. All of the above are correct statements.
2. Which of the following phenomena best illustrates Charles’ Law?
a. carbon dioxide being dissolved in water
b. breathing apparatus being used by a patient
c. leavening agent causing the fluffiness of cake products
d. expansion of the balloon as it is being submerged in hot water
3. Which of the following samples is highly compressible at high pressure and expandable at high temperature?
a. oxygen gas b. aluminum sheet c. water d. ice
4. 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 c. its volume remains unchanged
b. its volume is doubled d. its volume is decreased
5. Determine what will happen to the temperature of a confined gas as the pressure decreases.
a. the gas temperature stays the same c. the gas temperature decreases
b. the gas temperature increases d. there is no enough data
6. Which example has particles that can be drawn closer to occupy smaller volume?
a. fruit juice b. air inside the syringe c. block of wood d. ice cube
7. What law explains the mechanism of gas compressor?
a. Boyle’s Law b. Charle’s Law c. Combined Gas Law d. Ideal Gas Law
8. What gas law best explains the explosion of the heated aerosol container?
9. What gas law explains the relationship among the volume, pressure, temperature, and the number of moles of gases?
10. What will happen to the gas pressure as the temperature increases, if the amount and volume of the gas are kept constant?
a. the gas pressure remains the same c. the gas pressure decreases
b. the gas pressure increases d. there is no significant effect
11. Ana 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 c. balloons are made up of plastic
b. the air inside the balloon is hot d. air molecules can be compressed
12. What is most likely to happen when an aerosol can is heated?
a. the can will be deformed c. the can will stay the same
b. the can will eventually explode d. the can will tarnish
13. Records show that the incident of tire explosion is high during 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 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
14. Last summer vacation, the Cruz family decided to go to Pagudpud, 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.
15. 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
16. Which of the following phenomena best illustrates Charles’s 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
17. 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 c. the pressure inside the vessel increase
b. the temperature and pressure inside the vessel increase d. both the temperature and pressure inside the vessel
increase
18. Each container with varying volume has 1.0 mole of oxygen gas at 30.0 0C. In which container will pressure be the lowest?
a. 1L b. 2 L c. 3L d. 4L
19. A balloon with a volume of 200 ml at 30 0C is submerged in hot water to obtain a temperature of 50 0C. 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
20. 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
Choose ONLY 3 word problems to solve. Provide the given, formula to be used and show your
solutions.You may use extra papers for the solving the word problems. For your final answer box
it and put a small heart at the upper right corner of the box.GOODLUCK!
Problem #1: A gas occupies 12.3 liters at a pressure of 40.0 mmHg. What is the volume when the
pressure is increased to 60.0 mmHg?
Problem #2: If a gas at 25.0 °C occupies 3.60 liters at a pressure of 1.00 atm, what will be its volume
at a pressure of 2.50 atm?
Problem #3: Calculate the decrease in temperature (in Celsius) when 2.00 L at 21.0 °C is compressed
to 1.00 L.
Problem #4: 600.0 mL of air is at 20.0 °C. What is the volume at 60.0 °C?
Problem #5: A 30.0 L sample of nitrogen inside a rigid, metal container at 20.0 °C is placed inside an
oven whose temperature is 50.0 °C. The pressure inside the container at 20.0 °C was at 3.00 atm.
What is the pressure of the nitrogen after its temperature is increased to 50.0 °C?
Problem #6: Determine the pressure change when a constant volume of gas at 1.00 atm is heated
from 20.0 °C to 30.0 °C.

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Republic of the Philippines

FOURTH QUARTER EXAMINATION IN SCIENCE 10

Name: ____________________ Score:

1. Which of the following is a correct statement about the gas laws?

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