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First Quarter Examination IN Physical Science

physical science (AMA Computer University)

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MAINIT NATIONAL HIGH SCHOOL

FIRST QUARTER EXAMINATION IN PHYS.SCI
S.Y 2022-2023

Instructions: Read each question and/or statement carefully and write the best answer in a separate sheet of paper, or
in the answer sheet provided to you. Do not write anything on this test questionnaire.

1. What refers to the formation of the heavy elements by fusion of lighter nuclei within stars?
A. Nuclear fusion B. Nuclear fission C. Stellar nucleosynthesis D. Supernova
nucleosynthesis

2. What is the most accepted theory that explains the origin of the universe?
A. Big bang theory B. Big splat C. Multiverse D. Steady State

3. Which one from the following reactions occurs during “Alpha Ladder process”?
A. Fusion oh H to He C. Conversion of He to C
B. Conversion of He to Fe D. Formation of heavier elements

4. What is the lightest gas that is present during star formation?

A. Carbon B. Beryllium C. Hydrogen D. Germanium

5. What do we call the sequence in which the star glows brightly, and the hydrogen is converted into helium?
A. First sequence B. Second Sequence C. Third Sequence D. Main Sequence

6. It is the third sequence of the massive star.

A. Giant Red B. Red giant C. White Dwarf D. Red Supergiant

7. What is the last element that is being produced during alpha ladder?
A. Cobalt 23 B. Iron 56 C. Nitrogen 56 D. Oxygen 56

8. What would be the result if a massive star turns to be neutron star?

A. It will become red giant C. It will become black hole
B. It will become white dwarf D. It will become planetary nebula

9. How would you classify hydrogen?

A. It is a heavy boron element C. It is one of the heavy elements
B. It is a heavy element of all D. It is the lightest among all elements

10. How will you identify black hole?

A. It gives light to stars C. It has nothing to do with stars
B. It gives movement to stars D. It will absorb the light of neighboring stars

11. How could you verify your answer when balancing nuclear equation?
A. Reverse operation without changing signs C. Never mind the signs then proceed to the next number
B. Use a reverse operation by changing the signs D. Do not use reverse operation but use bombardment
data

12. Ana, a nuclear physicist, uses a cyclotron in the bombardment of nuclei. How does the said equipment work to
facilitate in her experiment?
A. It uses alternating electric field to accelerate particles that move in a spiral path in the presence of a
magnetic field.
B. It uses alternating electric field to decelerate particles that move in a spiral path in the presence of a
magnetic field.
C. It uses alternating magnetic field to accelerate particles that move in a spiral path in the presence of an
electric field.
D. It uses alternating magnetic field to decelerate particles that move in a spiral path in the presence of an
electric field.
13. The following reactions take place in the integration of beta decay into an isotope, EXCEPT:
A. Its atomic number goes up by one. C. It emits helium-4 nucleus or alpha particle.

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B. Its mass number remains the same. D. It emits an electron in the form of beta particle.

14. What is the missing species to complete and balance the nuclear equation below?
� � �
��� + ��� → _____ + ��

A. 126� B. 147� C. 178� D.199�

238 237
15. Which one of the following nuclear reactions correctly writes the production of 92� from 92 �
by neutron bombardment? A. 23792� + 10� → 23892� C.23892� →
23792� + 10�
B. 23792� + 11� → 23892� D. 23892� → 23792� +
11�

16. What is a measure of a liquid’s resistance to flow?

A. Solubility C. Polarity
B. Viscosity D. Capillary

17. Which one of the following describes the geometric shape of iron pentacarbonyl, Fe(CO)5?
A. Tetrahedral C. Trigonal Pyramid
B. Trigonal Planar D. Trigonal Bipyramidal

18. Which statements demonstrate accurate data when the intermolecular forces of a molecule
are stronger?
I. Viscosity is higher. II. Vapor pressure is higher.
II. Solubility is greater. III. Surface tension is weaker.
A. I and II B. I and III C. II and III D. II and IV

19. Which one of the structural representations# shown illustrates sulfur dioxide (SF6)?

A. B. C. D.

20. Which one of the following structural diagrams exhibits London dispersion forces as its intermolecular force?
A. B. C. D.

21. Potassium chloride (see Figure 5), KCl, is a naturally occurring potassium salt that, aside from its use as fertilizer,
is also a raw material for the production of other important potassium compounds. (Figure 5)

What bond is generated in the said compound?

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A. Ionic C. Polar Covalent

B. Nonpolar D. None of the above

For item 22, refer to Figure 6.

22. Based on the values of electronegativity difference (Δχ), what is the arrangement of the following compounds in
an increasing order: CCl4, CS2, LiCl, LiH and MgCl2?
A. CS2 < CCl4 < LiH < MgCl2 <LiCl C. LiH < CCl4 < CS2 < MgCl2 < LiCl
B. LiCl < CS2 < LiH < CCl4 < MgCl2 D. MgCl2 < LiH < LiCl < CS2 < CCl4

23. What measures the relative tendency of an atom to attract electrons to itself when chemically combined with
another atom?
A. Atomic size C. Electronegativity
B. Electron affinity D. Ionization energy

24. How can you describe when liquid A, a polar molecule, is mixed with liquid B, a non-polar molecule.
A. Liquid A tends to dissolve in liquid B. B. Both liquids separate into layer upon contact.
B. Liquid B tends to dissolve in liquid A. D. Both liquids will interact and mix together upon contact.

25. What is the bond of H2O?

A. Ionic bond B. Neutral bond C. Polar Covalent bond D. Non-polar Covalent bond

26. Which of the following examine(s) the shape or molecular geometry of a substance using VSEPR?
A. Finding the central atom of a molecule
B. Drawing the appropriate free-body diagram of the molecule
C. Determining the electron pair orientation using the total number of atoms
D. Naming the shape or molecular geometry based on the location of the atoms

27. Using the electronegativity data given below, assess which of the statements is true.
(The letter represents the symbol of an element and the number represents its electronegativity.)
H = 2.20 B = 2.04 C = 2.55 O = 3.44 Cl = 3.16

A. Both BCl3 and CO2 are non-polar molecules, while CHCl 3 is a polar.
B. Both BCl3 and CO2 are polar molecules, while CHCl3 is a non-polar.
C. Both CHCl3 and CO2 are non-polar molecules, while BCl3 is a polar.
D. Both CHCl3 and CO2 are polar molecules, while BCl3 is a non-polar.

28. Which one of the following supports the correct Lewis dot structure of SF 4?
A. B. C. D.

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Figure 7 shows the 3D model of Dichlorine monoxide (Cl2O).

29. How can you classify the bond angle of the compound above?
A. 90 degrees C. 120 degrees
B. 109.5 degrees D. 145 degrees

30. King, a resident chemist, investigates an unknown molecule whose atoms are connected in a straight
line, and a bond angle is simply the geometric angle between two adjacent bonds. Based on the
statement, which of the molecular shapes # is produced? A. B.
C. D.

31. What physical property of a substance is defined as the temperature at which the vapor pressure and atmospheric
pressure of a liquid substance are equal?
A. Volatility C. Melting point
B. Boiling point D. Vapor pressure

32. What refers to the ability of the two liquids to combine or in all proportions, creating a homogeneous mixture?
A. Miscibility C. Solubility
B. Polarity D. Viscosity

33. What would be the result if hydrogen bonding is expressed?

A. Methanol (CH3OH) C. Silicon tetrafluoride (SiF4)
B. Carbon monoxide (CO) D. Nitrogen tribromide (NBr3)

34. Study the interactions (i.e. red dots) between the molecules below. Which one of the structural representations #*
shown illustrates dipole-dipole?
A. B. C. D.

35. What set of compounds correctly follows the succeeding order of IMFAs: dipole, hydrogen bonding, dipole-
dipole, and London dispersion forces?
A. [acetone, benzene, water, and nitrogen tribromide] C. [nitrogen tribromide, water, acetone, and benzene]
B. [benzene, water, nitrogen tribromide, and acetone] D. [water, nitrogen tribromide, acetone, and benzene]

36. How would you expressed the relative strengths of attraction, evaluate the comparison between intermolecular
forces?
A. dipole-dipole < ion-dipole C. hydrogen bonding < London dispersion forces
B. ion-dipole = dipole-dipole D. London dispersion forces = hydrogen bonding

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37. Ana found chemistry subject tough. Her teacher gave her a homework to point out the types of IMFA interacting
between the molecules. She was stuck in a certain item, asking to determine which part in the picture (Figure 1 *)
London dispersion force occurred, with the corresponding figure:

What must be improved in the figure to validate the required IMFA?

A. Connect the O in 1 to the C in 2. C. Encircle the molecule, CH3OH, itself.
B. Connect the H in 2 to the O in 3. D. Encircle the molecule in 1, and connect the C in 2 to the O in 3.

38. What is known as the ability of a substance ( solid, liquid, or gas) to dissolve in a given substance ( solid, liquid, or
gas)?
A. Solubility C. Boiling point
B. Viscosity D. Melting point

39. What is a real-life example of surface tension observed either in nature or in everyday living?
A. Insects walking on water C. Sugar dissolving in water at 30°C
B. Water moving up a straw D. Syrup flowing slowly from a bottle

40. What is the difference between solubility and polarizability?

A. Solubility is the ability of an electron to dissolve in a given electron while polarizability is the
distortion of substance distribution.
B. Polarizability is the ability of a substance to dissolve in a given substance while solubility is the
distortion of electron distribution.
C. Polarizability is the ability of an electron to dissolve in a given electron while solubility is the
distortion of substance distribution.
D. Solubility is the ability of a substance to dissolve in a given substance while polarizability is the
distortion of electron distribution.

41. How can you describe if Ana wanted to demonstrate after she investigated how fast the cough syrup flowed to her
teaspoon is ______________?
A. It is the solubility of cough syrup C. It is the capillarity of the cough syrup
B. It is the viscosity of the cough syrup D. It is the vaporization of the cough syrup

42. Polarities of the unknown substances provided in the box.

I. Substance W- Nonpolar II. Substance X- Polar III. Substance Y- Polar IV. Substance Z- Nonpolar

What substances must he administer when he wants the process to be dissolved by water?
A. I and II C. III and IV
B. II and III D. I and IV

43. The vapor pressure of a liquid varies with its temperature, as the following graph (Figure 2) shows for the water.
The intersected line on the graph shows the normal boiling point for water.

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In terms of case-based scenarios, what can be numerically inferred from the relationship between temperature (T)
and vapor pressure (P), and vice versa?
A. T = ↑; P = ↓ C. T = ↑; P = ↑
B. T = ↓; P = ↑ D. T = ↕; P = ↗

44. Figure 3 shows the capillary action in water and mercury.

In mercury, how are cohesion and adhesion evaluated to each other?

A. Cohesion is equal to adhesion. C. Cohesion is less than adhesion.
B. Adhesion is less than cohesion. D. Adhesion is greater than cohesion.

45. Santiago is given a special task to code the properties of substances. What must be his reconstructed table
assuming that the strength of IMFA of a substance investigated is stronger? Note: Blue-lower level; red-higher
level

A. B. C. D.
Property Property Property Property
Viscosity Viscosity Viscosity Viscosity
Surface Tension Surface Tension Surface Tension Surface Tension
Vapor Pressure Vapor Pressure Vapor Pressure Vapor Pressure
Boiling Point Boiling Point Boiling Point Boiling Point
Melting Point Melting Point Melting Point Melting Point

46. What is a major insoluble fibrous protein found in connective tissues such as skin and cartilage?
A. Collagen C. Fibroin
B. Enzyme D. Keratin
47. What macromolecules play an essential role in the storage, transfer, and expression of genetic information?
A. Lipids C. Nucleic acids
B. Proteins D. Carbohydrates
48. How can you describe bear brand as one of the healthy milk drink?
A. It contains vitamin C C. It contains lactose which is good for your health
B. It contains vitamin D D. It contains lactose which is not good for your health

49. In terms of structure and origin, how does an oil generally distinguish from that of a fat?
A. It is a solid, plant-based source. C. It is a solid, animal-based source.
B. It is a liquid, plant-based source. D. It is a liquid, animal-based source.

50. Pescatarian (sometimes spelled "pescetarian" with an e) is a term sometimes used to describe those who abstain
from eating all meat and animal flesh with the exception of fish and other seafood. What macromolecule does
seafood most likely fall under?
A. Lipid C. Nucleic acid
B. Protein D. Carbohydrates

Prepared by: Checked by:

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JOVIE M. VALENCIA CHERRIE LUZ A. BAQUIRAN

SHST – II Master Teacher- I

Noted by:
GREORIA T. VILLAMOR
Secondary School Principal- II

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