DR. PABLITO V. MENDOZA SR. HIGH SCHOOL
Malamig, Bustos, Bulacan
THIRD PERIODICAL EXAMINATION
SCIENCE 8
Name: _____________________________________________
Grade and Section: _____________________
General Instruction: Encircle the letter of the correct answer.
1. What is the change of phase in matter from solid to liquid?
a. Evaporation
b. Freezing
c. Melting
d. Condensation
2. What is the change of matter from solid to gas?
a. Melting
b. Freezing
c. Sublimation
d. Condensation
3. What is known as the negatively charged sub-atomic particle?
a. Proton
b. Electron
c. Neutron
d. None of these
4. Which sub-atomic particle is heavier than neutron and is located inside the nucleus of an atom.
a. Proton
b. Electron
c. Neutron
d. None of these
5. Which of the following sub-atomic particle is located outside the nucleus?
a. Proton
b. Electron
c. Neutron
d. Matter
6. What sub-atomic particle has a zero charge?
a. Proton
b. Electron
c. Neutron
d. matter
7. Which of the following sub-atomic particle has a positive charge?
a. Neutron
b. Electron
c. Proton
d. Atom
8. Which model of an atom describes “nuclear model”?
a. Geiger’s Atomic Model
c. Rutherford’s Atomic Model
b. Marsden’s atomic Model
d. Thomson’s atomic Model
9. Which model of an atom that describes “plum pudding model”?
a. Geiger’s Atomic Model
c. Rutherford’s Atomic Model
b. Marsden’s atomic Model
d. Thomson’s atomic Model
10. Who is known as the “Father of the Periodic Table of Elements”?
a. Dmitri Mendeleev
b. John Newlands
c. Henry Mosely
d. Lothar Meyer
11. What element has a symbol Ag?
a. Argentum
b. Antimony
c. Gold
d. Silver
12. Which of the following symbol of elements represents Calcium?
a. Co
b. C
c. Ca
d. None of these
13. Which of the following is the chemical symbol of Potassium?
a. P
b. Po
c. K
d. Km
14. What is the chemical symbol of the element “Mercury”?
a. Me
b. Hg
c. Mc
d. None of these
15. All of the following are changes of phase in matter EXCEPT for one. Choose the one that does not
belong.
a. Condensation
b. Evaporation
c. Conduction
d. Melting
16. How does the mass of the neutron compare with the mass of proton?
a. Proton is greater in mass than in neutron.
b. Proton is lesser in mass than in neutron.
c. Proton and neutron are almost the same in terms of mass.
d. None of the above statement is correct.
17. “Electrons are sub-atomic particles that are distributed in different energy levels”. This statement is:
a. True
b. False
c. Sometimes true d. Uncertain
18. Which of the given statement below is TRUE about neutrons?
a. It is a negatively charged particle.
c. It is heavier than protons.
b. It is a positively charged particle.
d. It is lighter than electrons.
19. How is Thomson’s model of an atom related with Rutherford’s atomic model?
a. The presence of electrons in Thomson’s atomic model is proved in Rutherford’s atomic model.
b. The presence of electrons in Rutherford’s atomic model is proved in Thomson’s atomic model.
c. Both a and b are correct.
d. None of the above statement is correct.
20. How many valence electrons are there in the element Sulfur (16)?
a. 3
b. 4
c. 5
d. 6
21. How can you find the number of valence electrons?
a. By looking at the atomic number
b. Atomic weight less the atomic number
c. Adding the electrons in the highest energy level
d. Adding all electrons in the s and p block
22. All of the following are metallic elements EXCEPT for one. Choose the one that does not belong to the
group.
a. Copper
b. Iron
c. Oxygen
d. Silver
23. Which from the given sample of elements is a nonmetal?
a. Carbon
b. Hydrogen
c. Oxygen
d. All are correct
24. Which of the following DOES NOT show condensation?
a. Water vapor formed in the clouds after evaporation.
b. Water droplets formed at the side of a jar filled with ice cold drinks.
c. Vapor formed on the window of an air-conditioned room.
d. Water droplet that dries up through the action of sun’s heat.
25. Which of the following examples describes freezing?
a. A butter that liquefies.
c. A water that turns to ice in a refrigerator.
b. An ice that melts into water.
d. All the above answers are correct.
26. “Thomson’s atomic model is composed of negatively charged particles which called electrons” This
statement is:
a. True
b. False
c. Uncertain
d. Not at all times true
27. Which of the following DOES NOT describe J.J Thomson’s model of atom?
a. It is also known as plum pudding model of an atom.
b. It is popularly known as the modern atomic theory.
c. It is believed to have negatively charged particles inside the atom.
d. It is known by others as the raisin cake model of an atom.
28. What is the shell where the outer electrons are located?
a. Valence electrons
b. Valence shells
c. P shells
d. P shells
29. What are the electrons in the outer shell that are involved in chemical bonding?
a. Valence electrons
b. Valence
c. P electrons
d. P electrons
30. Which of the following describes Dmitri Mendeleev’s system of arranging the elements in the periodic
table?
a. Increasing atomic mass b. Common properties among elements c. Both a and b are correct
31. “Carbon has the greater atomic number than Chlorine”. This statement is:
a. True
b. False
c. Uncertain
d. Sometimes true
32. “Two-letter symbol of elements is always started with a capital letter.” This statement is:
a. True
b. False
c. Uncertain
d. Sometimes true
33. What is Biodiversity?
a. It is defined as the variety of life on Earth.
b. It is defined as the study of living and non-living things.
c. It is defined as the study of living things on Earth.
d. Both a and b are correct.
34. Which of the following DOES NOT define Biodiversity?
a. It comes from two words: Bio which means life and Diversity meaning variety.
b. It deals with the study of different kinds of living things on Earth.
c. It deals in studying environment and the different habitat of organisms.
d. None of the above.
35. Which organisms can adapt in extreme (hot) temperatures?
a. Halophiles
b. Thermophiles
c. Methanogens
d. Protists
36. Which organisms can live in very salty environments?
a. Halophiles
b. Thermophiles
c. Methanogens
d. Protists
37. What Kingdom does Thermophiles belong?
a. Kingdom Archaebacteria
c. Kingdom Plantae
b. Kingdom Eubacteria
d. Kingdom Protista
38. What is the correct way of writing the scientific name of a domestic cat?
a. Felis catus
b. Felis catus
c. Felis catus
d. Felis catus
39. Which level of biodiversity refers different kinds of places where organisms live and the
interconnections between them?
a. Species diversity
c. Ecosystem diversity
b. Genetic diversity
d. Ecological biodiversity
40. Which level of biodiversity refers to genetic information that organisms contain?
a. Species diversity
c. Ecosystem diversity
b. Genetic diversity
d. Ecological biodiversity
41. “A lot of Eukaryotes are unicellular, thus, are larger in size because of the greater number of cells their
bodies contain.” This statement is:
a. True
b. False
c. Uncertain
d. Sometimes true
42. Which level of biodiversity refers to different kinds of organisms?
a. Species diversity
c. Ecosystem diversity
b. Genetic diversity
d. Ecological biodiversity
43. “Methanogens can survive in places where there is no oxygen.” This statement is:
a. True
b. False
c. Uncertain
d. Not at all times true
44. Which is NOT part of the three domains of life?
a. Archaea
b. Eukarya
c. Protista
d. Bacteria
45. Domain: Kingdom; Phylum: _____________.
a. Class
b. Order
c. Family
d. Genus
You’re going to create a table / list of the electron configuration of some elements. Choose the letter of the
correct electron configuration for each element.
Atomic
Element
Electron Configuration
No.
46. a. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3
c. 1s2 2s2 2p6 3s2 3p6 4s2 3d104p3
Arsenic
33
b. 1s2 2s2 2p6 3s2 3p6 4s2 3p10 4p3
d. 1s2 2s2 2p6 3s2 3d6 4s2 3p6 4d3
Potassium
Chlorine
Bromine
Aluminum
19
47. a. 1s2 2s2 2p6 3s2 3p6 4p1
b. 1s2 2s2 2p6 3s2 3d6 4s1
c. 1s2 2s2 2p6 3s2 3p6 4s1
d. 1s2 2s2 2p6 3s2 3p6 4s2
17
48. a. 1s2 2s2 2p5 3s2 3p5
b. 1s2 2s2 2p6 3s2 3p5
c. 1s2 2s2 2p6 3s2 4p5
d. 1s2 2s2 2p5 3s2 3p6
35
49. a. 1s2 2s2 2p6 3s2 3d6 4s2 3d10 4p4
b. 1s2 2s2 2p6 3s2 3p6 4s2 3p4 4d10
c. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5
d. 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5
13
50. a. 1s2 2s2 2p6 3s2 3p1
b. 1s2 2s2 2p6 3s2 3d1
c. 1s2 2s2 2p6 3s2 3p2
d. 1s2 2s2 2p6 3s1 3p2