1. Name: _____________________________________ Score: _______________________
Section: ____________________________________ Date: ________________________
Test I Write the letter of the correct answer in the space provided for:
_____1. The role of chemistry is towards the development of society, except,
A. Improvement of pollution control
B. Make non-biodegradable materials useful.
C. Find more efficient ways to extract energy from fuels.
D. Develop alternative method to shorten life span to minimize over population.
_____2. How many significant digits are there in 0.01906? A. 4 B. 5 C. 6 D. 7
_____3. The recent population census showed that the Philippines has 92 000000 people. This can be represented correctly in
scientific notation as: A. 9.2 x 107 B. 9.2 x 106 C. 92 X 106 D. 92 x 107
_____4. A student was asked to determine the volume of an irregularly shaped piece of metal. Which of the following apparatus is
appropriate for the task?
A. Erlenmeyer flask B. Florence flask C. graduated cylinder D. meter stick
_____5. A person’s average intake of sugar is 3.78 x 104 mg. What is its equivalent in grams?
A. 3.78 x 103 g B. 3.78 x 102 g C. 3.78 x 101 g D. 3.78 x 10-4 g
_____6. The following are common instruments in measuring volume. Which of the following can measure accurately the volume of
large amount of liquid? A. burette B. graduated cylinder C. medicine dropper D. pipette
_____7. Which of the following involves a physical change of matter?
A. burning of paper B. rusting of iron C. solubility of salt in water D. tarnishing of silver
o
_____8. The density of silver is 10.5 g/ml at 20 C. What happens to the density of the silver when cut into half at the same
temperature? A. decreases B. increases C. remains the same D. reduces by one half
_____9 He is a famous Filipino scientist who searched on indigenous sources of energy, the most popular of which is biogas?
A. Anacleto del Rosario B. Armando Kapauan C. Clara Lim Sylianco D. Felix Maramba
____10. A French Chemist who used to balance to perform quantitative experiments that demonstrated the law of conservation of
mass. He is often called the founder of modern chemistry.
A. Avogadro B. Lavoisier C. Mendellev D. Meyer
____11. The base unit for temperature in the International System of Units is the
A. Celcius B. Fahrenheit C. Kelvin D. Rankine
____12. A student was asked to determine the volume of a gold ring. She placed it in a graduated cylinder with 40 mL water. What is
the volume of the gold ring if the final volume reading is 68 mL?
A. 28 mL B. 18 mL C. 10 mL D. 8 mL
____13. After running several tests, a doctor is writing prescriptions for his patients. By doing these, which of the steps in scientific
method did the doctor do?
A. identifying the problem B. formulating a hypothesis C. testing the hypothesis D. applying a conclusion
____14. When heating liquids in a beaker, which of the following is used to support and regulate heat?
A. aluminum foil B. clay triangle C. evaporating dish D. wire gauze
____15. A solid material has a density of 5 g/mL. What is the volume of 100 g of the material?
A. 10 g B. 15 g C. 20 g D. 25 g
____16. A medicine dropper is calibrated by counting the number of drops that deliver 1 mL. If 20 drops equals 1 mL, the volume of a
drop is: A. 0.5 mL B. 0.05 mL C. 0.0005 mL D. 0.25 mL
____ 17. A substance is observed to have luster and is malleable when hammered. What kind of substance is it?
a) compound. b) metal c) mixtures d) nonmetal
____ 18. Salt and sulfur differ in solubility in water. What is the correct order to be followed
in separating the three components from the mixture?
a.) filtration, distillation, evaporation b) evaporation, distillation, filtration
c.) distillation, evaporation, filtration d) distillation, evaporation, filtration
____ 19. Pond water becomes clear on standing. Which of the following is true?
a) it is an emulsion b) it is a colloid c) it is a suspension d) it is a solution
____ 20. A chemical system has the following description: denser and soluble in water, high melting point, colorless and odorless.
What properties of matter is used to describe this chemical system?
a) chemical properties b) colligative properties c) extensive properties d) intensive properties
____ 21. Organic substances contain the element carbon while inorganic substances do not contain carbon.
Which of the following is an organic matter?
a.) copper b.) salt c.) sand d.) sugar
____22. Tyndall Effect is the scattering of light by colloidal particles. Which of the given samples will show this phenomenon?
a.) milk and water b.) muddy water c.) sugar solution d.) vinegar
____23. A substance when heated produced a black solid and a brown gas. How would you classify the heated substance?
a.) compound b.) element c.) mixture d.) solution
____24. A mixture contains ammonium chloride and sand. Ammonium chloride sublimes.
What physical method can be used to separate ammonium chloride from the sand?
a.) decantation b.) evaporation c.) filtration d.) sublimation
____25. To remove a salad dressing from a tablecloth, a housewife used the chemical, trichloroethylene.
Which method of separating mixtures did the housewife use?
a.) distillation b.) extraction c.) magnetic separation d.) sorting
____26. Kalamansi juice is acidic. What will be its color reaction to litmus paper?
a.) red litmus paper will turn blue c.) red litmus paper will turn colorless
b.) blue litmus paper will turn red d.) blue litmus paper will remain blue
2. ____27. A grayish substance was heated and a violet gas was produced. Upon cooling, the substance regained its original color.
What is the classification of the original substance?
a.) compound b.) element c.) metal d.) nonmetal
____28. As you enter a building, you observe a beautiful blue beam of light from the glass roof. What is this phenomenon?
a.) adsorption b.) Brownian motion c.) peptization d.) Tyndall Effect
____29. How will you distinguish between an acid and a base?
a.) Compare their density b.) Test with litmus paper c) Compare their melting point d.) Test for Tyndall Effect
____30. What is true of organic compounds?
a.) They are heterogeneous. c.) They all contain the element carbon.
b.) They are all man made. d.) They all come from living organisms.
____31. A blue crystalline material is heated strongly in a test tube. A clear gas condenses around the mouth of the test tube and the
crystals gradually lose their blue color and become white powder. Every gram of blue crystal produces 0.36 g of clear
liquid and 0.64 g of colorless powder. The same weight relationships are observed for samples of the crystals taken from
many different sources. These observations are consistent with the hypothesis that the blue crystals are:
a) a compound b) an element c) a solution d) a wet salt
____32. A solid melts gradually between 85oC and 95oC to give a milky, oily liquid. When a laser bean shines through the liquid
The path of light become visible. The milky liquid is likely to be:
a) a colloid b) a compound c) an element d) a solution
____33. One of the ff. is a property of a solution. Which one is it?
a) It is a homogeneous mixture c) It has definite boiling temperature
b) It is a heterogeneous mixture d) Its particles can be seen when light passes through.
____34. Which of the following statements is NOT true about the chemical nature of metals?
a) They show luster b) They are malleable c) They form acidic solution d) They are good electric conductor
____35. Gold is used in jewelry because it can be hammered into thin sheets. It can be formed into different shapes without
breaking. What property of gold is being described?
a) conductivity b) hardness c) luster d) malleability
____36. Calcium burns in air and produces white ash. Which term best describes the product of burning?
a) acid b) metal c) nonmetal d) oxide
____37. A white solid that melts sharply was observed to give a colorless liquid and a black solid when burned. Which term best
Describes the solid?
a) compound b) element c) mixture d) substance
____38. A solid substance was observed to conduct electricity in solution. It formed ash when burned. The ash solution changed red
litmus paper to blue. What kind of substance is the solid?
a) compound b) element c) metal d) nonmetal
____39 Which statement about metals is true?
a) Metals conduct electricity. c) Metals break easily into pieces.
b) Metals are compounds. d) Metals produce acidic oxides.
____40. Some cough syrups need to be shaken before use. What kind of mixture are such cough syrups?
a) colloid b) homogeneous c) solution d) suspension
____41. Mixture X shows the following properties: its particles do not settle down, cannot be seen by the naked eye, and cannot be
filtered. The mixture does not show the Tyndall effect. Which term correctly describes this mixture?
a) colloid b) homogeneous c) solution d) suspension
____42. Crude oil is a mixture of gasoline, kerosene, liquefied petroleum gas (LPG), and asphalt.. These components differ in their
boiling points. Which method can be used to separate the components of crude oil?
a) evaporation b) filtration c) fractional distillation d) magnetic separation
____43. Which of the following is most appropriately separated by distillation?
a) A mixture of two insoluble liquids c) A mixture of a liquid and an insoluble solid
b) A mixture of a liquid and a soluble solid d) A mixture of two soluble liquids with different boiling points
____44. Chemistry is mainly concerned with matter. Which of the following properties of matter is not a major concern of a chemist?
A. Changes of matter B. Composition of matter C. Force and acceleration of moving matter D. Properties of matter
____45. Which of the following activities does not describe the role of chemistry to society and industry?
A. It seeks to determine the amount of fertilizer to be used in plants. C. It analyzes the nutrients present in canned goods.
B. It helps the farmers in conditioning the soil for crop production. D. It helps in the selling of the crops to earn more.
____46. What instrument is used to measure atmospheric pressure at sea level?
A. barometer B. calorimeter C. manometer D. thermometer
____47. Which of the following problems is not caused by a chemical reaction?
A. acid rain B. global warming C. Ozone Depletion D. soil erosion
____48. The following are common instruments in measuring volume. Which of the following can measure accurately the volume of
large amount of liquid?
A. burette B. graduated cylinder C. medicine dropper D. pipette
____49. The diagram below shows the changes on the three phases of matter. Which change represents sublimation?
Gas A. arrow 1
1 3 B. arrow 3
2 4 C. arrow 4
Liquid 6 Solid D. arrow 6
5
____50. Kalamansi juice is acidic. What will be its color reaction to litmus paper?
A. Blue litmus paper will turn red. B. Blue litmus paper will remain blue.
C. Red litmus paper will turn blue. D. Blue litmus paper will turn colorless.
