S8 - Q3 - Answer Key 2

SECOND WRITTEN TEST IN SCIENCE 8
QUARTER 3, SY 2021-2022
Instructions: Read each question carefully and write the correct answer in a
separate sheet of paper, or in the answer sheet provided to you. Do not write
anything on this test questionnaire.
1. Which of the following describes solid?

A. It flows and spread out.
B. The particles move freely.
C. It has no definite shape and volume.
D. The particles are packed closely in fixed positions.
2. What is the process in which a solid is changed to a liquid?

A. Condensation
B. Evaporation
C. Freezing
D. Melting
3. What is the transformation process in which a liquid is changed to a solid ?

A. Condensation
B. Evaporation
C. Freezing
D. Melting
4. The following are types physical change, EXCEPT.

A. Crystallization
B. Freezing
C. Liquifaction
D. Vaporization
5. What is the transformation of a gas or a vapor into a liquid?

A. Condensation
B. Evaporation
C. Freezing
D. Melting
6. What would happen to the particles gas when heated?

A. The particles move faster.
B. The particles break apart.
C. The particles get smaller.
D. The particles become more dense.
Test Developer: Deniah Carmen C. Paqueo DepEd-Caraga

School: Surigao del Norte National High School Sukdanan
Email Address: deniahcarmen.paqueo@deped.gov.ph Standardized Assessment
7. What process is involved when the solid iodine and solid carbon dioxide (dry ice)
change directly from solid phase to gas phase?
A. Condensation
B. Evaporation
C. Melting
D. Sublimation
8. Which of these statements is true about physical change?

A. New substance is formed.
B. It involves the breaking of bonds.
C. No changes in the physical appearance.
D. It involves a change in physical appearance.
9. What can you infer from a folded paper turned into origami bookmark?
A. There is a change in mass of the paper.
B. There is a change in shape of the paper.
C. There is a change in volume of the paper.
D. There is a change in wieght of the paper.
10. What action would you do to change back to liquid form the solidified oil?
A. Stir the solid oil.
B. Heat the solid oil.
C. Shake the solid oil.
D. Put the solid in a freezer.
11. Why does the red liquid inside the thermometer moves up when a thermometer
is heated?
A. The glass of the thermometer gets hot.
B. The red hot liquid is thin and it easily moves up.
C. The red hot liquid is lighter and it easily moves up.
D. The molecules of the red liquid move faster and get a little further apart.
12. Why does the red liquid inside the thermometer moves down, when a
thermometer is cooled?
A. The glass of the thermometer gets cold.
B. The red liquid is thick and it goes down.
C. The red liquid sinks because the thermometer is cold.
D. The molecules of the liquid move slower and get a little closer together.

13. What will happen if variables that control the phase which are temperature
and pressure will have opposite effects on the substance?
A. Increase in temperature more liquid to vaporize, increase pressure more
vapor to condense.
B. Increase in temperature less liquid to vaporize, decrease pressure more
vapor to condense.
C. Decrease in temperature more liquid to vaporize, increase pressure
more vapor to condense.
D. Decrease in temperature more vapor to condense, increase pressure
more liquid to vaporize.
14. What explanation you have when you heat a sample of solid and it gets bigger?
A. Heating helps the particles grow.
B. Heating the sample makes it lighter.
C. Heating allows the particles to move faster.
D. Heating helps the particles slide past each other.
15. How would you explain when you bring two drops of water near each other,
allow them to touch and they combine immediately to form one drop?
A. Water is a liquid state of matter.
B. Water molecules are made of atoms.
C. Water molecules are attracted to each other.
D. Water molecules are magnetic and repel each other.
16. Why do you think food coloring spreads out faster in hot water than in cold
water?
A. The molecules in hot water are larger .
B. The food coloring molecules are small.
C. The hot water molecules are less dense
D. The hot water molecules move more quickly.
17. Why do you think liquids can flow out of a container and can be poured into
another while maintaining their volume?
A.The distance of particles are large and move closer to each other.
B.The particles are fixed make it possible to have a definite volume.
C.The particles cannot move around which hold them together and make it
possible to have a definite volume.
D.The particles are attracted to one another strongly which hold them
together and make it possible to have a definite volume.
18. What would happen to the particles of matter as the matter changes state?
A. The particles gained energy and moved more slowly.
B. The particles gained energy and moved more quickly.
C. The particles released energy and moved more quickly.
D. The particles released energy and move as matter changed state.

19. What is your opinion why there is a change in volume of water in a beaker
measured 250 ml and after 5 days, the volume of water was 235ml?
A. Some of the water absorbed by the air.
B. Some of the water disappeared to the atmosphere.
C. Some of the water was released due to condensation.
D. Some of the water evaporated and escaped as water vapor.
20. Based on the figure below, how would you explain why such phenomenon is
happening on melting ice glaciers in some parts of the world?
Figure 1. Melting Ice Glaciers

Source: https://images.app.goo.gl/xbx3VtbqxbycxWJF9
A. When energy is lost in water molecules its velocity is reduced, ice cube
shrinks and melts.
B. When additional energy added to ice molecules, particles escape the
liquid to gas phase.
C. When heat energy flows from the water to the ice, heat transfer from
object of low temperature to object of high temperature .
D. When the molecules on the surface of the ice absorb enough energy to
to break the hydrogen bonds, they move apart and enter the liquid
phase, ice cube shrinks and melts.
21. How would you explain on the energy required to melt the ice is lesser
compared to the salt?
A. The ionic and hydrogen bonds of ice and salt are the same.
B. The ionic and hydrogen bonds of ice and salt are different.
C. The ionic bonds in salt are much stronger than hydrogen bonds in ice.
B. The ionic bonds in ice are much stronger than hydrogen bonds in salt.
22. What would happen to the water beads on the surface of a freshly waxed car if
you drag one drop to the other drop and let them touch?
A. Water molecules are in motion the reason water drops are separated
from each other.
B. Water molecules are extremely small the reason water drops are
separated from each other.
C. Water molecules are randomly arranged that is why the two drops of
water quickly join together.
D. Water molecules are very attracted to one another that is why the two
drops of water quickly join together.

23. Two thermometers with different liquids are heated at the same temperature.
Will the two thermometers give different reading? Why?
A. Yes, different liquids are made up of different molecules.
B. Yes, different liquids have different attractions for one another.
C. No, the molecules will increase their speed, separate, move up and the
readings in two thermometer will be the same.
D. No, the molecules will increase their speed but the amount that they
separate from each other will be different if heated.
24. A demonstration of a metal ball and ring set that is specially made so that at
room temperature the ball fits through the ring. However, when the ball is heated
by bunsen burner it gets stuck and cannot fit through anymore. When heated, the
ball actually gets a little bigger. How would you explain the motion and attractions
of the atoms in the metal ball that cause it to get slightly larger when heated?
A. The molecular level of an atoms decreased when the ball and the ring
was heated.
B. The atoms of the ring and ball when heated escaped through the air
and make the ball bigger.
C. The atoms would slow down enough that their attractions would bring
them closer together.
D. The atoms in the ring and ball vibrate faster and move further apart
thus increased in motion makes the ball bigger.
25. How would you explain the reason why the door is hard to open and close on
hot days?
A. The molecular level of an atoms increased and it makes the door just
a little bigger than normal.
B. The molecular level of an atoms decreased and it makes the door just
a little bigger than normal.
C. The molecules that make up the door are slightly closer and it makes
the door just a little bigger than normal.
D. The molecules that make up the door are slightly further apart and it
makes the door just a little bigger than normal.


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SECOND WRITTEN TEST IN SCIENCE 8

1. Which of the following describes solid?

2. What is the process in which a solid is changed to a liquid?

3. What is the transformation process in which a liquid is changed to a solid ?

4. The following are types physical change, EXCEPT.

5. What is the transformation of a gas or a vapor into a liquid?

6. What would happen to the particles gas when heated?

Test Developer: Deniah Carmen C. Paqueo DepEd-Caraga

8. Which of these statements is true about physical change?

Test Developer: Deniah Carmen C. Paqueo DepEd-Caraga

Test Developer: Deniah Carmen C. Paqueo DepEd-Caraga

Figure 1. Melting Ice Glaciers

Test Developer: Deniah Carmen C. Paqueo DepEd-Caraga

Test Developer: Deniah Carmen C. Paqueo DepEd-Caraga

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