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San Josef National High School San Josef Sur, Cabanatuan City Name:__________________________ Name:_________________________ _ Date: _______ Yr.Sec:_______________ Score:________ FIRST PERIODICAL TEST IN SCIENCE VII Direction;Read each item carefully.Write the correct answer on the space before the number. KNOWLEDGE ( 15 % ) _____1.Which of the following is an example of solution? a. salt b.soy sauce c.sugar d. all of these _____2.On a coffee drink, which is the solute? a. water b. coffee c. coffee and water d. none of these _____3.Which of the following does not describe a solvent? a. It is usually usually the material that has a greater amount. b. It is the material that dissolves dissolves the other material c. It is always in liquid form. d. None of these. _____4.Which of the following is NOT an example of solution? a.steel b.wine c.air d. none of these ____5.Which substances are not chemically combined? a. pure substances b. elements c. compounds d. mixtures ____6.Which of the following is NOT a solution? a. Gold b. oxygen c.silver d. all of these ____7.Which of the following is an example of mixture? a. seawater b.gold c.copper d.silver ____8.Which is not a compound? a. C B.H2O c.NACl d.CO2 ___9. . Which statement describes the solute? a. It is the solid formed in solution. b. It is the liquid part of the solution. c. It is the component of a solution in smaller amount. d. It is the component of a solution in bigger amount __10. Which of the following statements is true concerning acids and bases? a. acids and bases don't react with each other. b. acids mixed with bases neutralize each other c. acids mixed with bases make stronger bases b ases d. acids mixed with bases make stronger acids ___11.Which is the correct set of acid properties, as described by Boyle: a. sour taste, corrosive, change litmus from red to blue b. sour taste, corrosive, change litmus from blue to red c. sweet taste, slippery, change litmus from blue to red d. sour taste, slippery, change litmus from blue to red ___12. A solution with a pH of 12 is: a. weakly acidic b. strongly acidic c. weakly basic d. strongly basic __13. Which of the following is NOT a means of preparing carbon dioxide? a. burning coke in the absence of air b. combustion of methane c. heating certain normal carbonates d. action of acids on carbonates __14. Which of the following is the element represented by the symbol B? a. Barium b. Bismuth c. Boron d. Beryllium __15. In the periodic table, which of the following identifies a horizontal row?
a. period b. group c. family d. series UNDERSTANDING ( 30 % ) 16. Which of the following best describes matter? a. It has weight. c. It is a form of energy. b. It occupies space. d. It has a definite shape. 17. Which is a non-example of matter? a. fire c. light b. clay d. human heart 18. Which statement is TRUE regarding pure substances? a. Pure substances maybe homogeneous or heterogeneous. b. Pure substances have definite boiling and melting points. c. Pure substances are physical combinations of two or more elements. d. Pure substances can be further broken down into simpler substances. 19. At sea level, an odorless and colorless Liquid A boils at 100°C and melts at 0°C. What inference can be drawn from this observation? a. Liquid A is a metal . c. Liquid A is a nonmetal. b. Liquid A is a mixture. d. Liquid A is a pure substance. 20. Which of the following are pure substances? 1. tin 2. brass 3. fog 4. lime a. 1 and 2 c. 1 and 4 b. 1 and 3 d. 2 and 3 21. Which of the following statements is true for both elements and compounds? a. They are homogeneous. b. They are the simplest form of matter. c. They are commonly found free in nature. d. They can be broken down into simpler substances. 22. Copper, aluminum and gold are metals. Which incorrectly describes a metal? a. Metals are ductile. c. Metals are good insulators. b. Metals are malleable. d. Metals are good conductors of heat. 23. Sulfur, carbon and the noble gases are nonmetals. Which of the following best distinguishes a nonmetal from a metal? a. Its homogeneity. c. Its brittleness. b. Its boiling point. d. Its ductility. 24 All of the following will change blue litmus paper to red except a. vinegar c. Sprite or Seven-up b. kalamansi juice d. detergent solution 25. Your chemistry teacher asked you to test Substance Y using a litmus paper. You have noted that the red litmus paper turned to blue. This observation indicates that the substance is a. metallic c. acidic b. neutral d. basic 26 Which of the following best describes a mixture? a. It exhibits Tyndall effect. b. It is a homogeneous system. c. Its components are present in fixed proportion. d. It is a physical combination of two or more substances. PRODUCT ( 30 % ) 27. Which is an example of mixture? a. dew c. iodine crystals b. sugar d. rubbing alcohol 28. Of the types of mixture, which exhibits Tyndall effect? a. colloid c. suspension b. solution d. all of the above 29. Air is to solution as ________ is to colloid.
a. oil c. marshmallow b. halo-halo d. aqua oxinada 30. Which does NOT belong to the group? a. smoke c. mayonnaise b. soft drink d. toothpaste 31. Which of the following is NOT a characteristic of a mixture? a. It may be homogeneous or heterogeneous. b. Its components are present in any proportion. c. It is a physical combination of two or more elements. d. Its components can be separated by simple chemical processes. 32. Which is an example of a mixture? a. wine c. table sugar b. table salt d. baking soda 33. Which is an example of a suspension? a. glue c. soft drink b. gelatin d. muddy water 34. Which does not belong to the group? a. Salt : Solution c. Salad : Mixture b. Gel : Colloid d. Muddy water : Suspension 35. Which of the following gives colloids some unique characteristics that can be used to distinguish them from solution and suspension? a. Its density. c. Its boiling point. b. Its volume. d. Its particle size. 36. Which of the following statements is TRUE? a. Ferrous sulfate cannot be broken down into simpler substances. b. Compounds are made up of one kind of element. c. Water is composed of more than two elements. d. Compounds are more complex than elements. 37. Calcium chloride is a compound of the two elements calcium and chlorine. Which of the following statements is TRUE? a. Calcium chloride is listed in the periodic table. b. The symbol for calcium chloride includes Ca and Cl. c. Chlorine may still be broken down into a simpler form. d. Calcium and chlorine belong to the same group in the periodic table. 38. Which of the following elements is most likely ductile at room temperature? a. Sulfur b. Mercury c. Nitrogen d. Aluminum 39. An element was subjected into flame and the acidity of the oxide formed was tested. Solution of this oxide turned red litmus paper to blue. Which is most likely that element? a. Chlorine b. Nickel c. Phosphorus d. Silicon USE THE DIAGRAM BELOW TO ANSWER QUESTIONS 40-46
PROCESS ( 25 % ) 40. In which family are all the elements chemically unreactive? a. 1 b. 2 c. 3 d. 4 41. In which region are elements that do not conduct electricity? a. 1 b. 2 c. 3 d. 4 42. Which region are the metalloids? a. 1 b. 2 c. 3 d. 4 43. In which region are the non metals? a. 1 b. 2 c. 3 d. 4 44. The metals are in which region___. a. 1 b. 2 c. 3 d. 4 45. Which family has the most reaction metals? a. 4 b. 5 c. 6 d. 7 46. The transition metals are ____. a. 3 b. 7 c. 8 d. 9 47. The lanthanide series___. a. 4 b. 5 c. 6 d. 7 48. . Neon is an example of a(n): a. Alkali Metal b. Noble Gas c. Halogen d. Rare Earth Metal 49. Iodine is an example of a(n): a. Noble Gas b. Halogen c. Alkali Metal d. Rare Earth Metal 50. If an element is a gas at room temperature, then it must be a(n): a. Alkali Metal b. Nonmetal c. Halogen d. Alkaline Earth Metal
Prepared by : JOANA MARIE M. ESTARES
ANSWER KEY 1. C 2. B 3. C 4. D 5. D 6. D 7. A 8. A 9. C 10. B 11. B 12. D 13. A 14. C 15. A 16. B 17. C 18. B 19. D 20. C 21. A
22. C 23. C 24. D 25. D 26. D 27. D 28. A 29. C 30. B 31. D 32. A 33. D 34. A 35. D 36. D 37. B 38. D 39. B 40. D 41. B 42. C 43. C 44. A 45. D 46. B 47. B 48. B 49. B 50. B
