(Q3) THIRD QUARTER EXAMINATION
(SHS)PHYSICAL SCIENCE
Multiple Choice
Direction: Read each sentence carefully then WRITE the letter of the best
answer in a separate paper.
1. Which substance would have the weakest intermolecular forces of attraction?
a. CH4
c. NaCl
b. H2O
d. SH2
2. This interaction is observed in polar covalent molecules.
a. London Dispersion Force
c. Ion - Dipole Forces
b. Dipole - Dipole interaction
d. Hydrogen Bond
3. This pertains to forces that hold individual particles such as atoms, molecules,
or ions together.
a. IUPAC
c. IFMA
b. IMFA
d. IAFM
4. Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2 and excess Fe2O3?
a.
4 moles Fe
c.
9 moles Fe
b.
6 moles Fe
d.
2 moles Fe
5. 2H2 + O2 --> 2H2O
Using the above equation, when given 12 grams of Oxygen, with excess
hydrogen gas, what is the theoretical yield of H2O?
a. 13.512 grams of H2O
c. 14 grams of H2O
b. 10 grams of H2O
d. 13.5 grams of H2O
6. Which of the following equation below is balanced?
a. Al+3O2 --> 2Al2O3
c. 4Al+3O2 --> Al2O3
b. 4Al+O2 --> 2Al2O3
d. 4Al+3O2 --> 2Al2O3
7. Which of the following is NOT correct about intermolecular forces?
a. It is the force between two or more molecules.
b. It is the force between two or more atoms in a molecule.
c. It is responsible for the properties of substances.
d. It explains why a substance is solid, liquid or gas in room temperature.
8. What is the CMBR
a. The shape of the universe
b. The first primordial elements
c. Red shifted galaxies
d. Leftover heat from the Big
Bang
9. Henry Moseley's X-rays showed that each element had a unique positive charge
in the nucleus. This led to the discovery of the ________________.
a. atomic number
b. atomic mass
c. neutrons only
d. none of the above
10. What is the formula to solve for the neutron?
a. Mass + Atomic Number= Neutrons
b. Mass x Atomic Number = Neutrons
c. Mass - Atomic Number = Neutrons
d. Mass + Number of Protons = Neutron
11. Which substance has the weakest intermolecular force?
a. Substance A, boiling point of 750 Celsius
b. Substance B, boiling point of 1050 Celsius
c. Substance C, boiling point of 250 Celsius
d. Substance D, boiling point of 450 Celsius
12. Which of the following substances will most likely dissolve in water?
a. Carbon Tetrachloride (CCl4)
c. Oil
b. Hexane (C6H14)
d. Vinegar (CH3COOH)
13. Which of the following best describes the expansion of the universe?
a. As space expands, matter spreads out to fill up the empty space.
b. Expansion involves the spreading of matter into infinite and empty space.
c. As space expands the empty space between matter increases.
d. As space expands, matter continually is created to fill that space.
14. Which of the following is the best description of the Big Bang Theory?
a. The Big Bang Theory is the prevailing model about the universe’s origin
and is supported by observations of the universe’s expansion.
b. The Big Bang Theory is just one of the ideas about the universe’s origin,
many of which are equally respected by the scientific community.
c. The Big Bang Theory states that pre-existing matter was compacted into a
hot and dense form and suddenly exploded into infinite, empty space.
d. The Big Bang Theory is the scientific explanation of how the Sun, Earth,
and the rest of the Solar System were formed at the beginning of time.
15.
Which of the following is being described by the picture?
a. Capillarity
c. Viscosity
b. Surface Tension
d. Vapor Pressure
16. Which of the following is an example of a viscous substance?
a. blood
c. sweat
b. juice
d. vine
17. What shape do scientists think the universe is?
a.
Sphere
b.
Triangular
c.
d.
Saddle Shaped
Flat
18. A fusion of two light elements creates...
a. lighter elements + low energy
b. lighter elements + high energy
c. heavier elements + low energy
d. heavier elements + high energy
19. When not enough fuel is available for fusion, the gravity pushes the stars inward,
and it turns into a ____________.
a. nebulae
c. supernova
b. protostar
d. black hole
20. In Dalton's Atomic Theory, all elements consist of __________ that cannot be
divided.
a. Atoms
c. Molecules
b. Parts
d. Hydrogen
21. Surface tension is one of the physical properties that is affected by IMFA. How
does IMFA affects surface tension?
a. Molecules that show strong IMFA also have higher surface tension.
b. Molecules that show weak IMFA have higher surface tension.
c. Surface tension is not affected by IMFA.
d. Molecules that show strong IMFA have lower surface tension.
22. Viscosity is the ability of a liquid to resist flowing. It can be observed with honey,
lava, and syrups. IMFA can also affect viscosity. With the given liquids, which
among them has a higher IMFA based on their viscosity?
a. Water
c. Milk
b. Juice
d. Motor oil
23. The statement "like dissolves like" is applicable to what property of matter?
a. Solubility
c. Viscosity
b. Boiling Point
d. Miscibility
24. Which biomolecular group carries and passes on the hereditary information of the
organism?
a. carbohydrates
c. nucleic acids
b. lipids
d. proteins
25. Which among the group of elements is the basic unit of carbohydrates?
a. C and H
c. C, H and O
b. C, H and N
d. C, H, O and N
26. Which of the following does NOT belong to the classification of lipids?
a. hemoglobin
c. steroid
b. phospholipids
d. triglyceride
27. Which of the following is considered as the building blocks of protein?
a. amino acids
c. nucleotides
b. nucleic acids
d. polypeptides
28. Proteins are composed of four elements, namely: carbon, hydrogen, oxygen and
what other element?
a. magnesium
c. phosphorous
b. nitrogen
d. Sulfur
29. All polymers are made up of...
a. answer choices
b. monosaccharides
c. monomers
d. proteins
30. Why are the four biological macromolecules essential for life?
a. They all provide an organism with oxygen.
b. They do many important jobs to keep an organism functioning.
c. They provide an organism with food.
d. They are all broken down for energy.
31. When does a chemical reaction stop?
a. When the lab is finished
b. When the excess reactant is used up
c. When the limiting reactant is used up
d. Chemical reactions never stop.
32. What is the first thing you must do to solve a limiting reactant problem?
a. Balance the chemical Equation
b. Panic
c. Write an Unbalanced Equation
d. Avogadro's Number
33. What is the theoretical yield?
a. the maximum amount of product from a reaction
b. the amount of product recovered from a lab experiment
c. amount of product that causes the reaction to stop
d. the amount of product needed to reverse the reaction
34. n a lab, a scientist calculate he should produce 12.3 grams of product in his
experiment. When he is finished collecting his product it weighs 10.1 grams. What
is his percent yield?
a. 82%
c. 10.1 %
b. 0.82%
d. 100%
35. Na2CO3 + HCl <=> NaCl + CO2 + H2O
The preceding chemical reaction was performed using 76g of Na2CO3 and
produced 48g of NaCl. This did not match the theoretical yield. What was the
percent yield? (Note: Balance the chemical equation before computing for the
percent yield.) Show your solution for 5 points.
a. 50%
c. 48%
b. 22%
d. 57%
36. What does percent yield indicate?
a. The mass of product that should be obtained
b. How quickly the reaction is completed
c. The product of product actually obtained
d. The efficiency of the chemical reaction
37. The amount of product that actually forms when a chemical reaction is carried out
in a laboratory is called the _________ yield.
a. actual
c. percent
b. theoretical
d. efficient
38. 2Fe2O3 + C → Fe + 3CO2
You add 28 grams of carbon. You find the actual yield to be 181.2 grams of CO2.
What is the percent yield of CO2? (Hint: calculate theoretical yield of CO2 first)
a. 58.83%
c. 64.35%
b. 30.8%
d. 15.5%
39. Energy resources which naturally renew or replenish themselves over a period of
time.
a. renewable resources
c. reduce, reuse, recycle
b. non-renewable resources
d. solar resource
40. Energy from deep within the Earth
a.
solar
b.
magma
c.
d.
geothermal
biomass
41. Hydroelectric power produces electricity using
a. moving water
c. dung
b. wind
d. sunlight
42. Which of the following is NOT an advantage of using hydroelectrical energy?
a. dams are expensive to build
b. creates no green house gases
c. energy is inexpensive to harness
d. energy from water is free and reliable
43. Which of the following is NOT an advantage of using wind energy?
a. renewable source of energy
b. one of the most cost effective source of electricity
c. energy is inexpensive to harness
d. reliant on weather and therefore cannot produce electricity 24/7
44. Which of the following choices is true about renewable resources
a. wind, solar and hydroelectric energy using the same type of equipment
b. produces too much green house gases
c. biomass is non-renewable because of dead organisms
d. equipment use to harness energy from renewable resources are expensive to
build
45. All are true to electrochemical (batteries) source of energy EXCEPT
a. low cost and portable source of energy
b. renewable source
c. cannot be recycled and short life shelf
d. unstable voltage and current (as battery run down) and low power
46. Which of the following statements is true?
a. renewable energy leads to more air pollution that non renewable energy
b. wind and solar energy are more reliable that non renewable energy
c. renewable resources are easier to replenish than non-renewable energy
d. renewable energy offers fewer jobs than non renewable
47. There are 3 Main Fossil Fuels. We known them as -a. coal, oil, natural gas
b. carbon dioxide, oxygen, nitrogen
c. canyons, oceans, nymph
d. cookies, Nutella, Cadbury
48. All are true to electrochemical (batteries) source of energy EXCEPT
a. low cost and portable source of energy
b. renewable source
c. cannot be recycled and short life shelf
d. unstable voltage and current ( as battery runs down) and low power
49. Why is it helpful to use natural gas even though it's nonrenewable?
a. there is a limited supply
b. it releases less pollution than any other fossil fuel
c. It takes a while to make
d. We have an endless supply
50. Bonus Question: Why was the exam period moved to April 19 to 20 instead of
April 20 to 21?
a. Because of the Birthday of Queen Elizabeth II
b. Because of the Eid al-Fittr
c. Because of Araw ng Kagitingan
d. Because of World Creativity and Innovation Day
Prepared by:
MARIA ROSABEL I. AGUSTIN
SHS-Teacher I
Noted:
DAISY F. CIPRIANO, PhD.
School Principal