2. 1. In a gas, particles are in continual straight-
line motion. The kinetic energy of the
molecule is greater than the attractive force
between them, thus they are much farther
apart and move freely of each other. Which
illustrations represents the particles of gas?
A. B. C. D.
3. 2. States of Matter. Gases,
liquids and solids are all made
up of microscopic particles,
but the behaviors of these
particles differ in the three
phases. How would you explain
the images of the solid
particles?
A. Unnoticeable space between particles.
B. There are lots of free spaces between them.
C. There’s only little free space between them.
D. Particles can move fast one another at the
same time.
4. 3. A liquid is a nearly incompressible fluid that
conforms to the shape of its container but
retains a (nearly) constant volume independent
of pressure. Why does cooking oil take the
shape of its container?
A. The cooking oil is a liquid that has a definite
volume only.
B. The cooking oil is a liquid that has a definite
shape and volume.
C. The cooking oil has a definite volume but does not
take the shape of the container.
D. The cooking oil is a liquid that has a definite
volume but takes the shape of the container.
5. 4. Imagine inflating a balloon. Would anything
happen to the shape and size of the
balloon? Which of the following statements
supports the correct idea?
A. Only its shape increases.
B. Only its volume increases.
C. The shape of the balloon increases and also
its volume.
D. Only the shape of the balloon increases and
nothing happens to its volume.
6. 5. Gases take the shape of the container
because the particles are able to move
freely to all parts of the container, because
of far apart molecules, and negligible
attraction between them. Why gases can’t
assume definite shape?
A. Particles of a gas are not strongly attracted to
each other.
B. Particles of a gas move in very fast motion in
random order.
C. Gas particles are highly compressible and
expansible.
D. Particles of a gas have very high kinetic energy.
7. 6. You poured 215ml of water in a beaker.
After a week, you noticed that the volume
of the water was 200ml. Which statements
best explains the change in volume?
A. Some of the water disappeared.
B. Some water absorbed the air and evaporate.
C. Some of the water was released due to
condensation.
D. Some of the water evaporated and escaped into the
air as water vapor.
8. 7. You observed that water droplets stay
together on wax paper, plastic sheets, and
gabi leaves instead of breaking apart easily.
Which of the following explains the reason
why it occurs?
A. Water molecules are attracted to each other.
B. Water molecules are in motion.
C. Water molecules are small.
D. Water molecules are wet.
9. 8. When you mixed sugar and water and tasted
the resulting solution, it tasted sweet
because sugar is still present, though you
cannot see the sugar anymore. What
supports this statement?
A. The particles of water and sugar are combined together
and formed a new substance.
B. The particles of sugar are smaller than water that’s why
you cannot see it anymore.
C. Water and sugar are made of tiny particles, molecules,
with spaces between them. The water molecules could fit
in the spaces between the sugar molecules or vice versa.
D. The bigger particles of water make the sugar disappear
and makes the water sweet
10. 9. The kinetic theory of matter (particle theory)
says that all matter consists of many, very
small particles which are constantly moving or in
a continual state of motion. The degree to
which the particles move is determined by the
amount of energy they have and their
relationship to other particles. Which
statement about the particle theory of matter
is true?
A. The particles that make up matter are too small
to see without the microscope.
B. The particles in a liquid have no kinetic energy
than the particles in gas.
C. A solid stay in one place because its particles are
at rest.
D. When a solid melt, its particles no longer exist.
11. 10. Imagine dropping a marble into a transparent
glass. Would anything happen to the shape or size
of the marble? Which of the following statements
supports the correct concept?
A. The marble’s shape stays the same but the volume does not no
matter what size of a transparent glass you drop it because
marble is a solid.
B. The marble’s shape does not stay the same but the volume stays
the same no matter what size of a transparent glass you drop it
because marble is a solid.
C. The marble’s shape and volume stay the same no matter what size
of a transparent glass you drop it into because the marble is a
solid.
D. The marble’s shape and volume does not stay the same no matter
what size of a transparent glass you drop it because marble is a
solid.
12. 11. The molecules of water move fast because
of lesser attraction between them while
the molecules of air move very quick and
randomly in all directions due to least
intermolecular force of attraction. Which
of the following statements do liquids and
gases have in common?
A. Either liquids or gases have fixed shape.
B. Both liquids and gases have the ability to flow.
C. Both liquids and gases have weaker
intermolecular forces than solids.
D. All of the answers are correct.
13. 12. When you placed the cotton with perfume
on the table you smelled the fragrance of
the perfume even if you were at some
distance away. What happened to the
particles of the perfume?
A. The particles of the perfume condense.
B. The particles of perfume started to move
away.
C. The particles of the perfume come closer to
each other.
D. The particles of the perfume travel slightly
apart from each other.
14. 13. The amount of energy in molecules of
matter determines the state of matter
required for a phase change that occurs at
the melting point. What will happen to the
molecules of matter during phase change?
A. The molecules will move faster.
B. The molecules will stop moving.
C. The molecules will rearrange and form into
new state.
D. Both B and C.
15. 14. Solid is a phase of matter with definite
shape and volume. Its molecules are
incompressible and can vibrate a little in
fixed positions due to strong intermolecular
force of attraction. Which of the following
is an example of a solid??
A. Air you breath
B. Chair you sit on
C. Coffee you drink
D. Water you swim
16. 15. How do we determine the atomic mass of a
specific element?
A. Number of protons in its nucleus.
B. Number of electrons in its outermost shell.
C. Number of neutrons plus electrons in nucleus.
D. Number of neutrons plus protons in its
nucleus.
17. 16. Which of the following best describes the
illustration?
A. Water freezes
B. Water melts
C. Water condenses
D. Water evaporates
18. 17. Ana conducted an experiment. She poured
10-mL of water into a 50-mL beaker. She
covered and labeled it “A”. She set it
aside. She also poured another 10-mL of
water into another 50-mL beaker and
labeled it “B”. This time she did not cover
it. She kept it that way within 24 hours.
Based on the experiment Anna conducted,
Which of the following is possible to happen?
A. Water in a 50-mL beaker “A” decreased in volume.
B. Water in a 50-mL beaker “B” decreased in volume.
C. Water in a 50-mL beaker “A” increased in volume.
D. Water in a 50-mL beaker “B” increased in volume.
19. 18. Why does food coloring spread out faster
in hot water than in cold water?
A. Hot water is less dense.
B. The molecules in hot water are larger.
C. The food coloring molecules are small.
D. The water molecules in hot water moves
quickly.
20. For numbers 19 – 20 refer to the graph that
represents the temperature changes of
water as it is heated.
21. 19. Which figure best describes the
arrangement of molecules in line A?
A. B. C. D.
22. 20. What will be the arrangement of molecules
in line C?
A. B. C. D.
23. 21. Which of the following statement describes
physical change?
A. A change that does not alter the chemical
properties of the matter
B. A change that does alter the chemical
properties of the matter
C. A change where the characteristics do not
change the substance
D. Both A and C
24. 22. The drops of water that appear outside a
glass of cold juice on a warm day is an
example of what phase change of matter?
A. Condensation: a gas turning into a liquid.
B. Evaporation: a liquid turning into a gas.
C. Sublimation: a solid turning into a gas.
D. Deposition: a gas turning into a solid.
25. 23. Which letter on the diagram best
represents melting?
A. A B. B C. C D. D
26. 24. What is the difference between physical
and chemical change?
A. Physical change is only a change to the outside
appearance.
B. Chemical change is when matter is changed
into something new.
C. Atoms are rearranged in chemical change and
not in physical change.
D. All are correct.
27. 25. You have taken the ice cream from the
freezer and accidentally forgot to return
it back. After some time, there is a liquid
all over the counter in the kitchen. Where
the liquid on the counter came? The ice
cream __________.
A. Condensed
B. Evaporated
C. Melted
D. Froze
28. 26. Based on the illustration, which letter
represents the protons?
A. B B. C C. A D. A and B
29. 27. When temperature changes, matter can
undergo a phase change, shifting from one
form to another. Examples of phase
changes are melting (changing from a solid
to a liquid), freezing (changing from a
liquid to a solid), evaporation (changing
from a liquid to a gas), and condensation
(changing from a gas to a liquid). Which of
the following is NOT a process of changing
matter phase?
A. Evaporation C. freezing
B. Melting D. mixing
30. 28. You put a balloon on the mouth of a flask
filled with water. As you heat the water,
the balloon inflates. What phase change
occurred in the water as it was heated in
this situation
A. Condensation: a gas turning into a liquid.
B. Deposition: a gas turning into a solid.
C. Evaporation: a liquid turning into a gas.
D. Sublimation: a solid turning into a gas.
31. 29. Which among the subatomic particles are
located inside the nucleus of an atom?
A. Electrons and Protons
B. Neutrons and Protons
C. Electrons and Neutrons
D. Neutrons only
32. 30. A carbon atom has 6 protons in its
nucleus. How many electrons does carbon
atom have?
A. 2 B. 4 C. 6 D. 8
33. 31. Nitrogen is the 7th element in the periodic
table with atomic mass of 14. Which of
the following illustrations show the neutral
atom of nitrogen?
A. B. C. D.
34. 32. The plum pudding atomic model tried to
explain two properties of atoms then
known: that electrons are negatively
charged particles and that atoms have no
net electric charge. The plum pudding
model has electrons surrounded by a
volume of positive charge, like negatively
charged "plums" embedded in a positively
charged "pudding". Who proposed the plum
pudding atomic model?
A. Bohr C. Democritus
B. Dalton D. Thompson
35. 33. What does the number 39.098 in the
picture represent?
A. atomic mass
B. number of electrons
C. atomic number
D. number of protons
36. 34. What did John Dalton discover about
atoms?
A. He discovered that atoms had.
B. He discovered that every element consisted
one type.
C. He discovered that every atom was positivity
charged.
D. He discovered that atoms could be divided
into smaller parts.
37. 35. Electrons are organized according to their
energies into sets called shells. Generally the
higher the energy of a shell, the farther it is
(on average) from the nucleus. Shells do not
have specific, fixed distances from the
nucleus, but an electron in a higher-energy
shell will spend more time farther from the
nucleus than does an electron in a lower-
energy shell. What is the arrangement of
electrons in an atom?
A. It is arranged by color.
B. It is arranged by shape.
C. It is arranged in energy level.
D. It is arranged in groups of five.
38. 36. How many protons, electrons and neutrons
are present in an atom of Fe?
A. p+= 26; e-= 26; n0= 56
B. p+= 26; e-= 56; n0= 26
C. p+= 26; e-= 26; n0= 30
D. p+= 26; e-= 30; n0= 26
39. 37. In Rutherford’s gold foil experiment, some
of the alpha particles passed straight
through the gold foil, completely
undeflected. What could be the conclusion
of Rutherford in his experiment?
A. Electrons have a positive charge.
B. Alpha particles have a positive charge.
C. The atom is made up of mostly empty space.
D. There must be a small positively charged
dense area within the atom.
40. 38. Which of the following is the correct
sequence of scientist who contributed to
the development of atomic model?
I. JJ Thompson
II. Erwin Schrodinger
III. John Dalton
IV. Niels Bohr
V. Ernest Rutherford
A. A. II, I, IV, III, V C. V, III, II, I, IV
B. III, I, V, IV, II D. IV, III, II, I, V
41. 39. Based on the diagram, which of the
following is the correct number of
electrons of a neutral Copper atom?
A. 92 B. 63 C. 34 D. 29
42. 40. Which element of the Group 18 led to
replacement of the name “inert gases” into
“noble gases” due to its reaction with
other elements?
A. Argon
B. Helium
C. Radon
D. Xenon
43. 41. Electronegativity increases from left to
right across a row in the periodic table.
Electronegativity decreases as you move
down a group in the periodic table. Given
the elements inside the box below, which
order shows an increasing
electronegativity?
[S, Se, Cl, Br and P]
A. A. P, Se, S, Br, Cl C. S, P, Se, Cl, Br
B. B. S, Br, P, Se, Cl D. P, Se, Br, S, Cl
44. 42. What do you call with the chart containing
information about the atoms that make up
all matter?
A. periodic table
B. column chart
C. bubble chart
D. line chart
45. 43. What is the difference between the
modern periodic table and Mendeleev’s
periodic table?
A. The elements in the modern table are
arranged in order of increasing atomic number
while the Mendeleev’s periodic table are
arranged in order of increasing atomic mass.
B. The elements in the modern table are
arranged in order of increasing atomic weight.
C. The two tables are the same except we know
about more elements now.
D. All are correct
46. 44. The vertical columns on the periodic table
are called groups or families because of
their similar chemical behavior. All the
members of a family of elements have the
same number of valence electrons and
similar chemical properties. The horizontal
rows on the periodic table are called
periods. What do you call with the vertical
columns of the periodic table of elements?
A. families C. table
B. periods D. valence
47. 45. Fluorine is the only halogen that does not
form compounds with positive oxidation
states—i.e., states in which it has lost,
rather than gained, electrons. This property
is related to fluorine's having the highest
electronegativity of all elements; it does not
give up its electrons to other elements.
What is the distinct characteristic of
fluorine compared to other halogens?
A. It has the smallest radius
B. It has seven valence electrons
C. It has the smallest nuclear charge
D. It is the strongest reducing in agent.
48. 46. The nonmetal element group consists of
hydrogen, carbon, nitrogen, oxygen,
phosphorus, sulfur and selenium. Hydrogen
acts as a nonmetal at normal temperatures
and pressure and is generally accepted to
be part of the nonmetal group. What do you
call with the group of non-metals that are
very reactive and can form salts such a
A. actinide series C. Halogens
B. lanthanide series D. Noble Gases
49. 47. The periodic table does not show any
element with atomic number above 119.
Which of the following statements explains
the reason behind this?
A. These elements are less important so they
generally not shown.
B. It is impossible for such elements to exist in
place.
C. The elements had not yet been discovered.
D. The elements begin to repeat themselves at
the point.
50. 48. Metallic character is the name given to the
set of chemical properties associated with
elements that are metals. Which of the
following changes can acquire the metallic
character from left to right of periodic
table?
A. ascending metallic character
B. decreasing metallic character
C. increasing metallic character
D. gaining metallic character
51. 49. Consider the following sequence:
I. Al < Si < P < S
II. Be < Mg < Ca < Sr
III. I < Br < Cl < F
Atomic size increases moving top to bottom
because of the addition of another ring of
electrons to each element as we move from
top to bottom. Which of these give(s) a
correct trend in increasing atomic size?
A. A. I only C. III only
B. B. II only D. I and II only
52. 50. Carbon is one of the most important
elements of living things because it can
form different essential compounds. Which
of the following choices places carbon in
the correct category?
A. Period 14, group 2, representative element,
metalloid
B. Period 2, group 4A, representative element, non-
metal
C. Period 4A, group 14, transition element, metal
D. Period 1, group 4B, representative element, non-
metal
