Santiago National High School
Third Periodic Test
SCIENCE 8
I. Directions: Choose the letter of the correct answer. Write your answer on your answer sheet.
___1. Matter is anything that occupies space .Which of the following is not an example of matter ?
a. smoke
b. light
c. leaves
d. air inside the balloon
___2. Suppose you are given a sample of substance, how would you find out if the given sample is a matter?
a. Determine the mass of the sample.
b. Determine the volume of the sample.
c. Determine the texture and color.
d. Determine if the sample occupies space and has mass.
___3. How would you prove if an irregular object like stone occupy space?
a. It displaces liquid when place inside the graduated cylinder.
b. It stays on the bottom part of the graduated cylinder.
c. It t does not float when place inside the graduated cylinder.
d. Its mass is measurable.
___4.Which of the following best explains why heat is not an example of matter?
a. Heat is not tangible .
b. Heat does not occupies space.
c. It does not have mass.
d. Heat is energy radiated in the earth’s space.
___5.Which of the following exhibits the common observable properties of matter?
a. Heat and fog
d. Smoke and light
c. Book and ballpen
b. Light and heat
___6. Which of the following does NOT describe an atom?
a. Atom is indestructible.
b. Atom is indivisible.
c. Atom is still consists of smaller particles.
d. Atom can be seen under the high – powered light microscopes.
___7. Which causes the high density of solids?
a. The particles are more massive than those in liquids.
b. The intermolecular forces between particles are weak.
c. The particles are packed closely together.
d. The energy of the particles is very high.
___8. Which of the following will sink when submerged on water?
a. stone
b. plastic
c. wood
d. story ball
___9. A submarine is able to move throughout the water column by _____________.
a. altering its density
c. altering its mass
b. altering its volume
d. altering its weight
___10. Which of the following describes why the fragrance of a flower spreads?
a. pressure b. effusion
c. diffusion
d. volume
___11. How does temperature affect the rate of diffusion?
a. The higher the temperature, the faster the rate of diffusion.
b. The lower the temperature, the faster the rate of diffusion.
c. The higher the temperature, the slower the rate of diffusion.
d. The temperature doubles the speed of diffusion.
___12. What do you call to the net movement of a substance from a region of high concentration to a region of low
concentration?
a. osmosis
c. effusion
b. diffusion
d. active transport
___13. Which is an example of gas diffusion?
a. inflating a flat tire
b. salt mixes with cold water.
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c. Sugar mixes with coffee in a hot water.
d. All of the above.
___14. In which of the following situations exhibit the slowest rate of diffusion?
a. a cylinder of oxygen stored under high illustrate
b. Coffee powder mixes with hot water
c. Powdered juice mixes with cold water
d. the odor of perfume spreading throughout a room
___15. Which of the following does NOT describe a solid?
a. The solid particles are compactly arranged.
b. The solid particles are compressible.
c. A solid has a definite shape and volume.
d. The solid particles are held together by strong forces.
___16. Which of the following is NOT an example of evaporation?
a. water rising into dry air that moves over the ocean
b. bubbles forming as water boils
c. wet pavement drying after a rain shower
d. water droplets forming on a mirror
___17. What happens when wet clothes are hung on clothes – line in the open air?
a. The clothes will gradually become dry due to condensation.
b. The clothes will gradually become dry due to evaporation.
c. The clothes will gradually become dry because water molecules hung on the clothes – line.
d. The clothes will become dry because the water molecules leave as the clothes are hung.
___18. Which of the following shows the best examples of evaporation?
a. Dew
b. moisture in the window pane
c. steam from boiling water
d. Ice melts when put in a pitcher of water.
___19. When heat is added to water, it turns into __________.
a. Solid
b. liquid
c. water vapor d. precipitate
___20. Which of the following illustrates that gas turns into liquid?
a. melting of ice
c. rubbing alcohol on your arms
b. steam from boiling water
d. water droplets outside a cold glass of lemonade
___21. Which of the following statements is TRUE about condensation?
a. The process by which a solid changes directly into a gas.
b. A statement of chemical symbols that shows what happens during a chemical reaction.
c. The process by which particles leave a liquid and become a gas.
d. The process by which particles leave a gas and become a liquid.
___22. Which of the following is an example of condensation?
a. falling snow
c. cloud formation
b. breathing in and out
d. rainwater seeping into soil
___23. When you leave a glass of water standing on the counter, water forms on the outside of the glass. This is an
example of
a. condensation
b. evaporation
c. a solid
d. liquid
___24. Matter is changing from a solid to a liquid. How would you describe this process?
a. Melting
c. Deposition
b. Freezing
d. Sublimation
___25. Gilma put some ice cubes into a pot. He observed that the ice cubes melted .Which of the following correctly
showed the change in the states of the ice cubes?
a. gas --> liquid
c. solid --> gas
b. solid --> liquid
d. liquid --> solid
___26. When butter is heated, it melts. This is an example of matter changing from _______ state.
a. liquid to solid
b. solid to gas
c. liquid to gas
d. solid to liquid
___27. What is the energy source for the water cycle?
a. the sun b. the earth c. water d. the moon
___28. Water is liquid; how would you describe the situation as water sits in a container inside the freezer?
a. It freezes.
c. It remains the same.
b. It melts.
d. The solid changes into gas phase.
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___29. The nucleus accounts practically all the mass of an atom and possess a positive charge. Which statement
explains why a nucleus has these properties?
a. it is made of only protons.
b. it is made of protons and electrons.
c. it is made of protons and neutrons.
d. it is made of neutrons and electrons.
___30. Who is the proponent of the “Plum Pudding Model” of an atom?
A. Niels Bohr
B. John Dalton
C. Ernest Rutherford
D. Joseph John Thomson
___31. Which subatomic particle has no charge?
a. electron b. neutron c. positron d. proton
___32. Matter is changing from gas to solid state. How would you describe this process?
a. Melting b. Freezing c. Deposition d. Sublimation
___33. Which subatomic particles can be found in the nucleus of an atom?
a. protons only b. neutrons only
c. protons and electrons
d. protons and neutrons
___34. Which subatomic particle is negatively charged?
a. electron
b. neutron c. positron d. proton
___35. Which of the following subatomic particles determine the identity of an atom?
a. protons
b. neutrons c. protons plus neutrons
d. electrons plus protons
___ 36. Atoms are made up of three basic parts, which are a. Protons, neutrons, electrons
b. neutrinos, protons, neutrons
c. quarks, protons, electrons
d. electrons, neutrons, and quarks
___ 37. The central part of an atom is called the
A. Electron B. Neutron C. Proton D. Nucleus
___ 38. The electric charge on a proton is
A. Positive
B. Neutral C. Negative
D. Changing
___ 39. What is an example of evaporation?
a. Water boiling
b. Water turning into ice
c. Chocolate bar turning into liquid chocolate
d. Fog forming on a mirror
___ 40. What is an example of condensation?
a. Water boiling
b. Water turning into ice
c. Chocolate bar turning into liquid chocolate
d. Fog forming on a mirror
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