DIMATALING NATIONAL HIGH SCHOOL
3rd Quarter Examination
SCIENCE - 8
Name: ____________________________________________ Grade & Section: _________________Score:
MULTIPLE CHOICE
30
Directions: Read the questions carefully. Choose the letter of the correct answer.
1-8.
1. When you are observing a sample of matter you are focusing a particular characteristic. What
term refers to the characteristics that describe a sample of matter?
A. color
B. mass
C. property
D. volume
2. What states of matter have the greatest force of attraction?
A. gas
B. liquid
C. plasma
D. solid
3. Which statement describes the particles of solid?
A. Its particles are closely packed and held together by strong attractive force.
B. Its particles have enough space, definite volume but have indefinite shape.
C. Its particles are far from each other and have an indefinite volume and shape.
D. Its particles are free to move slowly but it takes the shape of their container.
4. Which of the following statements BEST describes the particles of a liquid?
A. Particles are closely packed.
B. Particles are free to move slowly.
C. Particles are far from each other.
D. Particles are held by strong attractive forces.
5. How does solid differ from other states of matter?
A. It has no definite shape or volume
B. It has definite shape and no definite volume
C. It has rigidity and resistance to change shape or volume
D. It has definite volume but take the shape of the container
6. Why do particles of solids CANNOT move around?
A. The particles are attracted to one another
B. The particles have negligible force of attraction
C. The particles fill all the available space in the container
D. The particles are packed closely and held together by strong forces
7. Why do particles of gases move freely?
A. It is because they are far from one another
B. It is because close to one another
C. It is because they are fixed in their positions
D. It is because they are strongly attracted to each other
8. Why do solid particles have a definite shape?
I. They are closely packed together.
II. They can easily be compressed.
III. They are arranged in a fixed position.
IV. There is a strong force of attraction between the particles.
A. I, II, III
B. II.III.IV
C. I.III.IV
D. I, II, III, IV
9-16
9. What term refers to the change of matter from one phase to another?
A. conversion
B. melting event
C. phase change
D. transition
10. What is the change in the state of matter from liquid to gas?
A. condensation
B. deposition
C. evaporation
D. melting
11. You have seen a volume of water scattered on the cemented floor. After few minutes it dries up
due to high temperature. What happened to the water?
A. It just dried up into nothing
B. It seeped through the floor
C. It turned into water vapor and mixed with the air
D. It split up into hydrogen and oxygen atoms which then mixed with the air
12. Water at 25ºC is heated and changed to gas at 100ºC. What happened to the water molecules?
A. It stops moving
C. It moves more slowly
B. It moves farther apart
D. It moves closer together
13. What happens to the particles of ice as ice changes to water?
A. Particles move and increase their intermolecular force
B. Particles move and increase their intermolecular space
C. Particles compress and decrease their intermolecular force
D. Particles compress and decrease their intermolecular space
14. During the process of evaporation, what causes the liquid to turn into gas?
A. The weakness of molecular bonds
B. The decrease in the vibration of particles
C. The decrease in the rate of kinetic energy
D. The decrease in the collision of molecules
15. What happens to the arrangement of particles in ice cream once its temperature increases?
A. The particles are freezing.
B. The particles are coming closer.
C. The particles are getting farther.
D. The particles are getting heavier.
16. What happens to particles of matter when the temperature of a substance increases?
A. Its particles stop moving
B. Its particles move quickly
C. Its particles move slowly
D. Its particles experience the attractive forces of other particles
17-24
17. What are the three basic subatomic particles?
A. proton, ion and electron
B. proton, neutron, and electron
C. nucleus, proton, and neutron
D. proton, neutron, and hydrogen
18. What do you call the number of protons within the nucleus of an atom?
A. Atomic mass
B. Atomic number
C. Mass number
D. Nucleon number
19. A neutral atom of nitrogen (N) has seven protons, seven neutrons, and seven electrons. What are
the atomic number and mass number of Nitrogen?
A. 7;7
B. 7;14
C. 14;7
D. 14;14
20. Which among the three subatomic particles is a positively charged metallic plate?
A. electron
B. neutron
C. nucleus
D. proton
21. An element has a mass number of 40 and atomic number of 20. How many neutrons does this
atom have?
A. 2
B. 20
C. 40
D. 60
For numbers 22-23 refer to the picture below.
22. How many protons does the Iron element have?
A. 26
B.30
C. 55.845
D. 56
23. How many electrons does the Iron element have?
A. 26
B. 30
C. 55.845
D. 56
24. The element aluminum possesses 14 neutrons and 13 protons. What will be its mass number in the
form of aluminum ion, Al3+?
A. 16
B. 17
C. 27
D. 30
25-30
25. What element group does Rubidium belong?
A. alkali metal
B. alkaline metal
C. basic metal
D transition metal
26. How are elements in the periodic table arranged?
A. It is arranged from/by simple to complex
C. It is arranged from/by increasing atomic number
B. It is arranged from/by lightest to heaviest
D. increasing by size and shape
27. What group of elements in the periodic table is described below?
I. Soft-silvery white color.
II. Good conductor of thermal energy. -reactive
III. Good conductor of electricity.
IV. Atoms contain a single valence electron.
A. alkali metals
B. halogens
C. noble gas
D. alkaline-earth metals
28. Which of the following is a nonmetal?
A. Mercury
B. Oxygen
C. Platinum
D. Titanium
29. With respect to the position in the periodic table of the representative elements, how can you
describe its metallic characteristic from top to bottom?
A. It is constant
B. It is decreasing
C. It is increasing
D. It is the same
30. In what group does Chlorine belong?
A. halogen
B. metalloid
C. nonmetal
D. transition metal