St. Mary’s Academy of Sto. Niño
STO. NIÑO SUBDIVISION, CITY OF MEYCAUAYAN, BULACAN
PAASCU Accredited
FIRST UNIT TEST
S.Y. 2018-2019
I.
Choose the letter of the correct answer.
1. What do we call a simple way to write and keep track of very large or very
small number without having to deal with a lot of zeros?
a. Scientific figures
b. Scientific notations
c. Scientific method
d. Conversion unit
2. Which of the following statements describes a physical property?
a. Ice melts when heated.
b. An iron bar rust.
c. Aluminum is a silver-colored metal.
d. A paper burns.
3. When water boils, bubbles rise to the surface of the water. What are these
bubbles made of?
a. Oxygen
b. Air
c. gas
d. Water vapor
4. Which of the following is an intensive property?
a. Boiling point
b. Volume
c. Weight
d. Specific gravity
5-6: Refer to the example of mixtures below.
I.Rubbing Alcohol
III.Mixture of water and oil
II. Carbonated softdrinks
IV. Mixture of salt and pepper
5. Which of the following mixtures mention above is homogenous?
a. I and II
b. I and III
c. II and IV
d. I and IV
First Unit Test in Science 12/S.Y. 2018/Page 1 of 6
6. Which of the following mixtures mention above is heterogeneous?
a. II and IV
b. I and II
c. II and III
d. I and IV
7. Which of the following symbols corresponds to the element tin?
a. Zn
b. Ag
c. Sb
d. Sn
8. What property of matter is an example of flammability, toxicity, reactivity to
water and oxygen like rusting, heat of combustion and pH enthalpy?
a. Physical Property
b. Chemical property
c. Phase transition
d. Separating Methods
9. How will you separate mixtures involving the use of food color or ink/drug
components?
a. Distillation
b. Decantation
c. Filtration
d. Chromatography
10. The following are examples of consumer products, which of the following
is pure substance?
a. Brown sugar
b. Human breath
c. Water
d. Air
11. What is the other term for homogeneous mixture?
a. Solvent
b. colloids
c. Suspension
d. solution
12. Why did the solid state of matter has definite volume and definite shape?
a. Because its particles are slightly closed to each other.
b. Because its particles are far apart.
c. Because its particles are packed closely.
d. Because its particles are free flowing.
13. What do we call a particle that is indivisible and it is the basic unit of
element?
a. Matter
b. Nucleus
c. element
d. atom
First Unit Test in Science 12/S.Y. 2018/Page 2 of 6
14. You have a salt solution and you want to separate the salt from the salt
solution. How will you separate it?
a. By using the method of Distillation
b. By using the method of Evaporation
c. By using the method of Filtration
d. By using the method of Decantation
15. What kind of metal that has a characteristic of good electrical conductors
and heat conductors?
a. Nonmetals
b. Metals
c. Metalloids
d. Alkaline Metals
16. What kind of metal has characteristics of having an excellent
semiconductor?
a. Metals
b. Metalloids
c. Nonmetals
d. Alkaline Metals
17. The following are example of chemical properties
except______________.
a. Rusting
b. Burning of wood
c. Souring of milk
d. Evaporation of water
18. Which qualitative term used in determining the degree of conformity of a
test result to true or accepted value?
a. Precision
b. Measurement
c. Accuracy
d. mass
19. How did Democritus explained the matter?
a. That all matter is consisted of plasma.
b. That all matter is consisted of minute particles called Atomos.
c. That all matter is start with the cosmic egg.
d. That all matter is consisted of space and time.
20. What subatomic particle that has electrically neutral?
a. Proton
b. Electron
c. Neutron
d. Nucleus
First Unit Test in Science 12/S.Y. 2018/Page 3 of 6
21. How did Aristotle define the theory of Continuous?
a. That all matter is composed of four (4) elements: water, earth, air and
fire)
b. That all matter is composed of small particles called atoms and it is
indestructible.
c. That the matter is originated in water.
d. That in matter, there is void exist.
22. It is a quantity that defined as mass per unit volume.
a. Specific gravity
b. Mass
c. Temperature
d. Density
23. It pertains to digits or figures that are certain to give reasonably reliable
information.
a. Scientific notation
b. Significant figures
c. Scientific method
d. Conversion unit
24. The mothballs you placed inside of your cabinet was being smell
throughout your room as you open your cabinet. How did the mothballs
were being smell throughout your room?
a. The mothballs were turns directly into gas and that is under the
process of sublimation.
b. The mothballs melt down and the gas is spread throughout your room
and that is under the process of decantation.
c. The mothballs were filtered inside the cabinet and the gas was being
spread automatically and that is under the process of filtration.
d. The mothballs have its own life and can create a gas that can spread
throughout the specific place.
25. What kind of compound that is formed when an acid and a base react with
one another?
a. Sugar
b. Colloids
c. Salt
d. Yeast
II.
Shade A if the following is an example of element, B if compound, C if
Homogeneous and D if heterogeneous.
26. Bread/pandesal
27. Halo-halo
28. Acetone (C3H6O)
29. Blood
30. Beach sand
31. Glucose
32. Table salt
First Unit Test in Science 12/S.Y. 2018/Page 4 of 6
33. Hydrogen
34. Soil
35. Ammonia
III.
Identify the following. Shade the correct letter.
A.
B.
C.
D.
Empedocles
Democritus
John Dalton
Ernest Rutherford
36. He created the gold-experiment to help him elucidate the existence of the
nucleus.
37. He proposed the concept of air, fire, water, and earth to explain the
composition of matter.
38. He proposed that atoms have fixed weights and definite properties.
39. He came up with the theory stating that everything is composed of small
indivisible particles called atomos.
IV.
Determine the number of significant figures of the following items.
40. 887 000 g
41. 0.000755 kg
42. 245 m
43. 567.345 mm
44. 4 500 g
45. 70000000 g
46. 150.0 L
47. 0.80 m
48. 384600000 s
49. 564 m
50. 1080400 g
First Unit Test in Science 12/S.Y. 2018/Page 5 of 6
NAME____________________________________________________DATE______
GRADE & SECTION: __________________________________________________
V.
ESSAY:
DIRECTION: Explain and justify the bible passage related to the topic
“Atomic Structure”
Galatians 4:3
“So also we, while we were children, were held in bondage under the
elemental things of the world.”
4
3
2
1
There is one clear, well-focused topic, Main idea stands out and is supported
by detailed information.
Main idea is clear but the supporting information is general.
Main idea is somewhat clear but there is a need for more supporting
information.
The main idea is not clear. There is a seemingly random collection of
information.
First Unit Test in Science 12/S.Y. 2018/Page 6 of 6