MOTHER TERESA ACADEMY OF MARILAO, BULACAN INC.

#267 Sandico Street, Poblacion II, Marilao, Bulacan

Tel No.: (044) 248 84 63 Email Address: m_therese98@yahoo.com
SECOND PERIODICAL EXAMINATION
GENERAL CHEMISTRY I
Name:_________________________________ Score/Rating:___________________
Section:________________________ _______ Date:__________________________
Teacher: Sir Nikko Carillo Parent’s Signature:
KNOWLEDGE
I. Read the questions carefully and encircle the letter of the best answer. Any ERASURE or
ALTERATION will make the answer invalid.
1. It is defined as force exerted per unit area.
a. volume c. number of particles
b. temperature d. NOTA
2. It pertains to the measurement of the speed of particles while moving inside an object.
a. volume c. number of particles
b. temperature d. NOTA
3. It refers to the amount of space an object takes up.
a. volume c. number of particles
b. temperature d. NOTA
4. It states that when the temperature of the gas increases, the volume also increases.
a. Boyle’s law c. Gay-Lussac’s law
b. Charles’ law d. NOTA
5. It states that the pressure of a certain mass of gas is directly proportional to its absolute
temperature at constant volume.
a. Boyle’s law c. Gay-Lussac’s law
b. Charles’ law d. NOTA
6. It states the volume of gas at a constant temperature and pressure is directly proportional to the
number of moles of gas present.
a. Boyle’s law c. Gay-Lussac’s law
b. Charles’ law d. NOTA
7. Which of the following is not true?
a. At STP, the pressure is equal to 760 torr.
b. At STP, the temperature is 1°C.
c. The volume of the gas increase as the temperature increases.
d. The volume of the gas at STP is 22.4L
8. Which of the following properties of gases indicate that the molecules are at constant random
motion?
a. It has low density. c. It leaks out of the container
b. It is difficult to compress. d. It is usually visible.
9. An aerosol can with a pressure of 4atm and a temperature of 20°C is thrown into a campfire. The
temperature of the can reaches 400°C and the pressure inside exceeds 8atm. What do you expect to
happen next?
a. If the temperature increases and the pressure of the can also increase, the can will explode.
b. If the pressure decreases and the temperature of the can also decrease, the can will explode.
c. If the temperature increases and the pressure of the can decrease, the can will shrink.
d. If the temperature increases and the pressure of the can decrease, the can will expand.
10. What will happen to the volume of a gas sample when pressure is increased at constant
temperature?
a. The volume will increase. c. The volume will remain the same.
b. The volume will decrease. d. None of the above
11. Which of the following will diffuse the fastest?
a. CO2 b. NH3 c. SO2 d. H2
12. Which of the following demonstrates Charles’ Law?
a. Softdrinks cans pop when opened. c. Hair spray cans burst when heated.
b. Fish ball expand when fried. d. Automobile tires blast when burned.
13. A balloon is designed to be inflated to a volume of not more than 1.5L. If the balloon with 1.2L HE
at 760mmHg allowed to rise at a level with an atmospheric pressure of 300mmHg, what will happen
to the balloon?
a. It will expand and burst. c. It will neither expand nor shrink.
b. It will expand but not burst. d. Cannot be determined.
14. Which of the following statements about the Kinetic Molecular Theory is correct?
a. At a given temperature, molecules with greater molar mass will have higher average kinetic energy.
b. Molecules with a lower molar mass will have a slower velocity.
c. The average kinetic energy of a gas is dependent on temperature.
d. As the temperature of a gas increases, the average kinetic energy decreases.
15. Which of the following demonstrates Avogadro’s Law?
a. A balloon over the mouth of a bottle containing air begins to inflate as it stands in the sunlight.
b. A hot air balloon takes off when burners heat the air under the balloon’s open end.
c. When you squeeze an inflated balloon, it seems to push back harder.
d. An inflated raft gets softer when some of the gas is allowed to escape.
16. Medical gases are stored in cylinders having a constant volume and high pressure. When stored at
high temperatures, the pressure of these gases rise, which can cause explosion. This is an application
of?
a. Boyle’s Law c. Gay-Lussac’s Law
b. Charles’ Law d. Avogadro’s Law
17. Chemical bonds are forces of attraction that hold atoms together to form compounds. What type
of bond is formed when nonmetals share electrons?
a. ionoc b. electrovalent c. covalent d. metallic
18. Refer to the portion of the periodic table below that shows the elements belonging to the same
period.
Group 1A 2A 3A 4A 5A 6A 7A
Element Na Mg Al Si P S Cl
Which nonmetal element shown above will readily accept electrons from K?
a. Si b. P c. S d. Cl
19. All halogens form compounds with calcium with the formula CaX2, where X represents the
halogen. What kind of chemical bond is present in all compounds represented by CaX2?
a. covalent b. ionic c. metallic d. H-bond
20. The element P has the atomic number 12. Element Q has the atomic number 16. What is the
formula of the compound formed when these two elements react together?
a. P2Q b. PQ c. PQ2 d.PQ3
21. An element X reacts with hydrogen to form a compound of formula HX. In which group in the
periodic table is X most likely be found?
a. 1A b. 2A c. 7A d. 8A
22. Magnesium has 2 electrons in its outer shell. Oxygen has six electrons in its outer shell. How does
magnesium bonds with oxygen in magnesium oxide.
a. A Mg atom shares 2 electrons with an O atom.
b. An O atom shares 6 electrons with a Mg atom.
c. A Mg atom gives 2 electrons to an O atom.
d. An O atom gives 6 electrons to an Mg atom.
23. What is the correct combination of the ions when CaO is formed?
a. two Ca+2 and two O-2 c. one Ca+2 and two O-2
b. one Ca+2 and one O-2 d. two Ca+2 and one O-2
24. Which of the following compounds is ionic?
a. Na2O b. CO c. SiC d. SO2
25. Which of the following statements is INCORRECT?
a. Most ionic compounds have high melting points and boiling points.
b. Polar molecules have unsymmetrical distribution of electron clouds.
c. Ionic compounds are formed by electrostatic forces of attraction held between nonmetals.
d. Nonpolar molecules have symmetrical distribution of electron clouds.
26. Which of the following molecules is nonpolar?
a. NH3 b. H2O c. OF2 d. CH4
27. Which of the following structures is correct??
a. c.

b. d.
28. The simplest aliphatic alcohol is methanol (CH3OH). How many bonds should exist in methanol to
become stable?
a. 4 b. 3 c. 5 d. 2
29. The bond angle in CCl4 is _______.
a. 180° b. 120° c. 109.5° d. 90°
30. How many lone pairs and bonding pairs are on the central atom of PF3?
a. 2 and 2 respectively c. 1 and 3 respectively
b. 1 and 2 respectively d. 2 and 3 respectively
31. Which of the following compounds contains a triple bond?
a. C2H6 b. C2H4 c. C2H2 d. CH4
32. The following are the general characteristics of polar compounds, except _______.
a. low melting point c. conductivity
b. low boiling point d. high solubility in water
33. Which has the smallest bond length?
a. C2H6 b. C2H4 c. C2H2 d. CH4
PROCESS
II. Analyze the table properly and fill it with the correct answers.
Element Mg Au
Electron Configuration

Distribution of Electrons

LSC
Orbital Diagram of LSC

n
l
ml
ms
Magnetic property

Combining Diagram showing Valence Formula of Compound

Elements transfer of electron (Oxidation number)
Mg
N
Al
O

Combining Valence Electron Dot Formula

 Elements (Oxidation number)
N
O2
C2
H6
O

III. Name the following the following compounds properly. If the name of the compound is given
construct its structural formula properly.
1. 4.

2. 5.

3. 6.

UNDERSTANDING
IV. Read the statements carefully and answer it correctly. Write your complete solution on the space
provided and box your final answer.
1. What pressure is required to compress 295 liters of air at 1.00 atm into a cylinder whose volume is
15 liters?

2. If 15 liters of neon at 30 °C is allowed to expand to 65 liters, what must the new temperature be to
maintain constant pressure?
3. If 12 liters of oxygen at STP are heated to 605 °C, what will be the new volume of gas if the pressure
is also increased to 1450mm of mercury?

4. A gas has a pressure of 7.52 kPa at 500 K. What will the pressure be at 125 K if the volume does not
change?

5. 5.26 mol O2 is enclosed in a 1.75L container. How many additional moles of O2 should be added to
the container to increase the volume to 3L at the same temperature and pressure?

6. Calculate the density of Argon (Ar) in a light bulb at 1.25atm and 32°C.

7. A gas sample is composed of 242mol NO2 and 315mol Cl2. Determine the partial pressure of each
gas if the sample’s total pressure is 30atm.
8. A sample of unknown gas and N2 are allowed to effuse from the same apparatus. The unknown gas
effuses at the rate of 5.46ml/s, whereas the N2 effuses at the rate of 9.55 ml/s. What is the molar
mass of the unknown gas?

10. How many liters of N2 are produced when 15g NH3 is used in the reaction at STP?
N2(g)+3H2(g)→2NH3(g)

11. 34.0 mL of a 6.0 M sulfuric acid solution is spilled on the floor. The acid is neutralized by pouring
sodium hydrogen carbonate on the spilled acid. What is the volume, in L, of the carbon dioxide which
is released? The gas being released is at 25 °C and 1 atm.

H2SO4 + 2NaHCO3 = NA2SO4 + 2H2O + 2CO2

 MOTHER TERESA ACADEMY OF MARILAO, BULACAN INC.
#267 Sandico Street, Poblacion II, Marilao, Bulacan
Tel No.: (044) 248 84 63 Email Address: m_therese98@yahoo.com
SECOND PERIODICAL EXAMINATION
GENERAL PHYSICS I
Name:_________________________________ Score/Rating:___________________
Section:________________________ _______ Date:__________________________
Teacher: Sir Nikko Carillo Parent’s Signature:
KNOWLEDGE
I. Read the statements carefully and encircle the letter of the correct answer. NO ERASURE or
ALTERATIONS.
1. “If two objects are in thermal equilibrium with a third, then they are in thermal equilibrium with
each other.”
a. First Law of Thermodynamics c. Zeroth Law of Thermodynamics
b. Second Law of Thermodynamics d. None of the above
2. “Natural process go in a direction that maintains or increases the total entropy of the universe.”
a. First Law of Thermodynamics c. Zeroth Law of Thermodynamics
b. Second Law of Thermodynamics d. None of the above
3. “The change in internal energy of a system equals the difference between the heat taken in or
given out by the system and the work done by or on the system.”
a. First Law of Thermodynamics c. Zeroth Law of Thermodynamics
b. Second Law of Thermodynamics d. None of the above
4. A device that transfers heat energy from a low temperature reservoir to a high temperature
reservoir.
a. Isobaric b. Entropy c. Heat engine d. Heat pump
5. The pressure in the system does not change.
a. Isobaric b. Entropy c. Heat engine d. Heat pump
6. A measure of disorder in a system. The particles in the object will be moving randomly at different
speeds.
a. Isobaric b. Entropy c. Heat engine d. Heat pump
7. Any device that converts heat energy into work. It requires a high temperature source which heat
can be removed.
a. Isobaric b. Entropy c. Heat engine d. Heat pump
8. No heat enters or leaves the system.
a. Adiabatic c. Isovolmetric
b. Isothermal d. none of the above
9. Volume of the system does not charge or no work done.
a. Adiabatic c. Isovolmetric
b. Isothermal d. none of the above
10. Temperature and internal energy of the system are constant.
a. Adiabatic c. Isovolmetric
b. Isothermal d. none of the above
11. Which of the following is not true about torque?
a. The quantity that measures how effective a force is applied to an object.
b. The force if more effective when it is farther to the center.
c. The greater the grip, the greater of force will be created.
d. none of the above.
12. Nikko is stirring his hot choco for breakfast. Which of the following is not true?
a. The greater the speed the bigger the radius will be formed.
b. The hot choco will no spill with exact and constant velocity.
c. The smaller the radius the more force will be exerted.
d. The lesser the friction the more speed will be produce.
13. The ability of the material to return to its original size.
a. Malleability b. Elasticity c. Strain d. Stress
14. It causes the object to become stretched or elongated.
a. Malleability b. Elasticity c. Strain d. Stress
15. The relative amount of deformation produced in a material under stress.
a. Malleability b. Elasticity c. Strain d. Stress
PROCESS and UNDERSTANDING
II. Read the statements carefully and answer it correctly. Write your complete solution on the space
provided and box your final answer.
1. A 1400N of load if being transfer by a crane which is 20m long horizontally and with a supporting
string the form 20° angle from the horizontal. Find the tension of the crane and string.

2. A steel bar is carrying a load of 400N and 200N on both ends. Where must be the center of gravity
place to balance the 10m steel bar?
3. Wei is using a baseball bat to break the glass. If 150N of force is needed to break the glass and Wei
exerts 400N of force. Where must he hold the 1m baseball bat?

4. What is the centripetal force on a 6kg object travelling in circular motion with a radius of 3m and
speed of 60m/s?

5. What is the angle of banking so that a car will not skid on a 30m radius and speed of 40m/s?

6. Find the stress, strain and y on the wire which is 4m long and area of 0.5m2. The wire was stretched
by a force of 10N and elongation of 0.05m.

7. How much hear is required to raise the temperature of 250g marble by 100°C?

8. How much change of temperature is needed to change the length of 500g of brass by 1 cm?
9. A force of 250N is applied on metal sheet measuring 0.5m by 0.4m. What is the pressure on the
metal sheet?

10. A cork in the mouth of cylindrical glass container with a 10cm diameter produces a pressure of
3,500,000Pa. Determine the force exerted by the cork.

11. A 25,000Pa pressure is due to a 1,200N perpendicular force acting on a surface. Determine the
area of the surface on which this force is acting.

12. A certain material has a volume of 300cm3. If its mass is 30kg, what is its density?

13. A bar of gold that measures 5 x 5 x 15 cm. If the owner wishes to sell it for P1,500 per gram, how
much can he sell it?
14. What is the buoyant force exerted by a fluid on an object immersed in it, if 0.005m 3 of fluid was
displaced by the object? The density of the fluid is 1025kg/m3.

15. A cubical block has a 0.1m on each side. When the block is placed in oil, ¼ of it is above the oil
surface. What is the density of the block if oil has density of 800kg/m3?

16. Chok wants to determine the density of an apple. He first placed 1000ml of water in a beaker.
When he placed the apple in the water, the water rose to 1240ml. What is the density of the mango
and the buoyant force exerted by the water if the mango has a mass of 170g?
 MOTHER TERESA ACADEMY OF MARILAO, BULACAN INC.
#267 Sandico Street, Poblacion II, Marilao, Bulacan
Tel No.: (044) 248 84 63 Email Address: m_therese98@yahoo.com
SECOND PERIODICAL EXAMINATION
PRECALCULUS
Name:_________________________________ Score/Rating:___________________
Section:________________________ _______ Date:__________________________
Teacher: Sir Nikko Carillo Parent’s Signature:
KNOWLEDGE
I. Read the statements carefully and write the correct answer on the space provided.
________________1. A system of equations where at least one of the equations is nonlinear.
________________2. An ordered pair that satisfies each of the given equations.
________________3. The sum of the first n terms of a sequence.
________________4. The sum of all the terms of an infinite sequence.
PROCESS
II. Find the solution of the given equations. Box your final answer and write your complete solution on
the space provided.
1. Solve the following equations using substitution method.
x2 – 2y = 6
2x + y = 3

2. Solve the following equations using elimination method.

3x2 + 6x –y = 7
4x – y = -1

3. Solve the following equations using quadratic formula.

1. x2 + y2 -4x +10y + 21 = 0
x – 2y = 0

4. Find the sum of the series 3 + 11 + 19 + . . . +227

5. 2, 4, 6, 8, . . ., S12

6. Expand the binomial (2x2 – 6)8

7. Find the term of the binomial (3a3 + b2)10 with x7y3

8. Find 2 coterminal angles with 65° that is less than π.

9. Simplify the trigonometric function sinx cosx tanx secx cscx

10. Simplify the trigonometric function (sec2x + csc2) – (tan2x +cot2x)

𝑠𝑒𝑐 2 𝑥−𝑡𝑎𝑛2 𝑥
11. Simplify the trigonometric function
𝑠𝑖𝑛𝑥

𝑡𝑎𝑛2 𝑥+1
12. Simplify the trigonometric function
𝑡𝑎𝑛𝑥 𝑐𝑠𝑐 2 𝑥

13. Find the six circular functions of an angle in unit circle whose at π/2.

14. Find the reference angle of the following angles.

UNDERSTANDING
IV. Read and analyze the questions carefully and answer it correctly. Box your final equation and write
your complete solution.
1. Find the sigma notation of the series, 9/4 + 16/5 + 25/6 + 36/7 + 49/8

2. The sum of twice the 1st number and twice the 2nd number is 28. Find the number is their product is
45.

3. The sum of the squares of two numbers decreased by 75 is 50. Their quotient is 2. Find the
numbers.

4. The difference between the squares of two numbers is 16. Twice the square of the first number
increased by the square of the second number is 59. Find the numbers.
 MOTHER TERESA ACADEMY OF MARILAO, BULACAN INC.
#267 Sandico Street, Poblacion II, Marilao, Bulacan
Tel No.: (044) 248 84 63 Email Address: m_therese98@yahoo.com
SECOND PERIODICAL EXAMINATION
SCIENCE 10
Name:_________________________________ Score/Rating:___________________
Section:________________________ _______ Date:__________________________
Teacher: Sir Nikko Carillo Parent’s Signature:
KNOWLEDGE
I. Read the questions carefully and write the correct answer on the space provided.
____________________1. It is about 4g in a 1400g brain but plays a big role in the endocrine system.
____________________2. It increases basal metabolic rate and protein synthesis.
____________________3. It is involved in the circadian rhythm such as daily sleep-wake cycles; it
includes drowsiness by lowering body temperature.
____________________4. Stimulates release and synthesis of milk from mammary glands.
____________________5. It stimulates uterine contraction and lactation.
____________________6. It increases water permeability in the nephrons thus promoting water
reabsorption and increasing blood volume.
____________________7. It stimulates osteoblasts for bone construction and in inhibits calcium
release from the bones.
____________________8. It stimulates the release of calcium ions from the bone and stimulates
osteoclasts to breakdown bones.
____________________9. It stimulates gluconeogenesis in liver to release glucose and increase the
blood glucose level.
____________________10. It stimulates secretion of hydrochloric acid by the parietal cells.
____________________11. It stimulates erythrocyte production.
____________________12. It is responsible for the pigment of our skin.
____________________13. Mode of action of the endocrine system that receives signal from the
blood.
____________________14. Mode of action of the endocrine system that receives signal from the
other hormones.
____________________15. It serves as shock absorber of the brain and the spinal cord.
II. Enumeration.
a. 4 lobes of the Cerebrum 1.
1. 2.
2. 3.
3. e. 3 layers of Meninges from hardest to softest
4. 1.
d. Three protective organs of brain and spinal 2.
cord 3.
PROCESS
III. Write PARA if the statement pertains to parasympathetic division and SYMPA if it pertains to
sympathetic division.
________1. inhibits urination ________6. erections of genitals
________2. promotes ejaculation ________7. stimulates stomach
________3. inhibits saliva production ________8. constrict pupils
________4. constricts bronchi ________9. stimulates glucose release
________5. slows heart rate ________10. stimulates epinephrine
IV. Complete the table with the correct answers.
# NAME
I O
II O
III O
IV T
V T
VI A
VII F
VIII A
IX G
X V
XI S
XII H
V. Analyze the images carefully and complete the following boxes with the label or the function of the
organ.
 UNDERSTANDING
IV. Read the statements carefully and answer it correctly.
1. What are the main components of DNA?

2. What are the components of nitrogenous base of DNA?

3. Explain how DNA replicate.

4. Explain the different types of RNA.

5. What is the percentage of the offspring will be homogenous if the parents are BB (black hair) and
bb (brown hair)? What percentage will be Black hair?