1 What is the density of this magnetic steel alloy? 2.67 g/ml 3.99 g/ml 6.90 g/ml 8.01 g/ml

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1 1 What is the density of this magnetic steel alloy? 2.67 g/ml 3.99 g/ml 6.90 g/ml 8.01 g/ml

2 1 What is the density of this magnetic steel alloy? 2.67 g/ml 3.99 g/ml 6.90 g/ml 8.01 g/ml

3 2 r. Julian s foam was most successful in extinguishing oil fires. What are the most likely physical characteristics of this foam? Less dense than oil and does not allow oxygen in Waterproof and contains flammable materials More viscous than water and lighter than air rightly colored and more porous than plastic

4 2 r. Julian s foam was most successful in extinguishing oil fires. What are the most likely physical characteristics of this foam? Less dense than oil and does not allow oxygen in Waterproof and contains flammable materials More viscous than water and lighter than air rightly colored and more porous than plastic

5 3 sample of an element has a volume of 78.0 ml and a density of 1.85 g/ml. What is the mass in grams of the sample? Record and bubble in your answer to the nearest tenth on the answer document.

6 3 sample of an element has a volume of 78.0 ml and a density of 1.85 g/ml. What is the mass in grams of the sample? Record and bubble in your answer to the nearest tenth on the answer document.

7 4 block of maple wood with a volume of 405 cubic centimeters and a density of 0.67 g/cm 3 is sawed in half. The density of the two smaller blocks is now one-fourth the original density one-half the original density two times the original density the same as the original density

8 4 block of maple wood with a volume of 405 cubic centimeters and a density of 0.67 g/cm 3 is sawed in half. The density of the two smaller blocks is now one-fourth the original density one-half the original density two times the original density the same as the original density

9 5 This pipette is filled with a 20% NaOH solution. The solution is at 20 and has a density of 1.23 g/ml. ccording to this information, what is the mass of this NaOH solution? 3.88 g 15.7 g 23.9 g 24.6 g

10 5 This pipette is filled with a 20% NaOH solution. The solution is at 20 and has a density of 1.23 g/ml. ccording to this information, what is the mass of this NaOH solution? 3.88 g 15.7 g 23.9 g 24.6 g

11 6 Swimmers find that they can float more easily in the ocean than in a freshwater pond. The most likely reason for this phenomenon is that the viscosity of pond water is greater than that of ocean water density of ocean water is higher than that of pond water temperature of pond water is lower than that of ocean water mass of ocean water is greater than that of pond water

12 6 Swimmers find that they can float more easily in the ocean than in a freshwater pond. The most likely reason for this phenomenon is that the viscosity of pond water is greater than that of ocean water density of ocean water is higher than that of pond water temperature of pond water is lower than that of ocean water mass of ocean water is greater than that of pond water

13 7 ompared to 250 g of gaseous nitrogen, 250 g of liquid nitrogen has greater volume temperature mass density

14 7 ompared to 250 g of gaseous nitrogen, 250 g of liquid nitrogen has greater volume temperature mass density

15 8 The picture shows the results of pouring a blue liquid into a clear liquid and allowing the mixture to settle for 25 minutes. ompared to the clear liquid, the blue liquid is more massive dense viscous soluble

16 8 The picture shows the results of pouring a blue liquid into a clear liquid and allowing the mixture to settle for 25 minutes. ompared to the clear liquid, the blue liquid is more massive dense viscous soluble

17 Liquid escription ensity (g/ml) oiling Point ( ) Q Nonflammable colorless compound R Flammable colorless compound S Yellow mixture with strong odor T Viscous pale-yellow oil The table shows properties of four liquids that are insoluble in water. If the four liquids are poured into an Erlenmeyer flask containing water, which liquid will form a layer below the water? Q R S T

18 Liquid escription ensity (g/ml) oiling Point ( ) Q Nonflammable colorless compound R Flammable colorless compound S Yellow mixture with strong odor T Viscous pale-yellow oil The table shows properties of four liquids that are insoluble in water. If the four liquids are poured into an Erlenmeyer flask containing water, which liquid will form a layer below the water? Q R S T

19 ml quantity of vanilla ice cream has a mass of 400 grams. The manufacturer then bubbles air into the ice cream so that its volume increases by 300 ml. What is the ice cream s approximate final density? F 0.30 g/cm 3 G 0.50 g/cm 3 H 0.80 g/cm 3 J 1.30 g/cm

20 ml quantity of vanilla ice cream has a mass of 400 grams. The manufacturer then bubbles air into the ice cream so that its volume increases by 300 ml. What is the ice cream s approximate final density? F 0.30 g/cm 3 G 0.50 g/cm 3 H 0.80 g/cm 3 J 1.30 g/cm

21 11 bar of soap produced by this soap-making process normally sinks to the bottom of a container of water. Which of these processes could cause the bar of soap to float in water? Making grooves in the surface of the thick paste dding air bubbles to the thick paste Letting the thick paste sit for four days hilling the mold filled with the thick paste

22 11 bar of soap produced by this soap-making process normally sinks to the bottom of a container of water. Which of these processes could cause the bar of soap to float in water? Making grooves in the surface of the thick paste dding air bubbles to the thick paste Letting the thick paste sit for four days hilling the mold filled with the thick paste

23 12 s the viscosity of a liquid increases, the liquid conducts electricity pours more slowly evaporates more quickly forms a precipitate

24 12 s the viscosity of a liquid increases, the liquid conducts electricity pours more slowly evaporates more quickly forms a precipitate

25 13 Water normally boils at 100 at sea level and at 97 on a North merican mountaintop. This difference in boiling points can be explained by the difference between the locations ultraviolet light air pressure gravitational force thermal energy

26 13 Water normally boils at 100 at sea level and at 97 on a North merican mountaintop. This difference in boiling points can be explained by the difference between the locations ultraviolet light air pressure gravitational force thermal energy

27 14 The buoyant force that a fluid exerts on objects is increased when there is an increase in the fluid s F G H J acidity clarity solubility density

28 14 The buoyant force that a fluid exerts on objects is increased when there is an increase in the fluid s F G H J acidity clarity solubility density

29 15 The observation that an air bubble in water rises to the surface is explained by the principle of viscosity buoyancy interference polarity

30 15 The observation that an air bubble in water rises to the surface is explained by the principle of viscosity buoyancy interference polarity

31 16 rown sugar consists of crystals of white sugar coated with molasses. If brown sugar hardens, it can be softened by heating. The most likely reason brown sugar softens when heated is that heat increases the moisture of sugar decreases the volume of molasses increases the density of sugar decreases the viscosity of molasses

32 16 rown sugar consists of crystals of white sugar coated with molasses. If brown sugar hardens, it can be softened by heating. The most likely reason brown sugar softens when heated is that heat increases the moisture of sugar decreases the volume of molasses increases the density of sugar decreases the viscosity of molasses

33 17 heat decomposes the compound the elements are volatile pressure increases their ionic bond is broken

34 17 heat decomposes the compound the elements are volatile pressure increases their ionic bond is broken

35 18 The correct formula for calcium chloride is al al 2 a 2 l a 2 l 3

36 18 The correct formula for calcium chloride is al al 2 a 2 l a 2 l 3

37 19 Which of the following groups contains members with similar chemical reactivity? Li, e, e, Mg, Sr Sc, Y, Zr, N, O

38 19 Which of the following groups contains members with similar chemical reactivity? Li, e, e, Mg, Sr Sc, Y, Zr, N, O

39 20 ccording to the periodic table, which element most readily accepts electrons? Fluorine Nitrogen rsenic luminum

40 20 ccording to the periodic table, which element most readily accepts electrons? Fluorine Nitrogen rsenic luminum

41 21 Elements in Group 16 of the periodic table usually F G H J form large molecules gain electrons when bonding act like metals solidify at room temperature

42 21 Elements in Group 16 of the periodic table usually F G H J form large molecules gain electrons when bonding act like metals solidify at room temperature

43 l 3+ SO ccording to this information, what is the chemical formula for aluminum sulfate? lso 4 l 2 (SO 4 ) 3 l 3 (SO 4 ) 2 l 6 SO 4

44 l 3+ SO ccording to this information, what is the chemical formula for aluminum sulfate? lso 4 l 2 (SO 4 ) 3 l 3 (SO 4 ) 2 l 6 SO 4

45 alcium (a 2+ ) + hloride (l ) alcium chloride 23 The chemical formula for calcium chloride is F G a 2 l al H al 2 J a 2 l 3

46 alcium (a 2+ ) + hloride (l ) alcium chloride 23 The chemical formula for calcium chloride is F G a 2 l al H al 2 J a 2 l 3

47 24 n unidentified element has many of the same physical and chemical properties as magnesium and strontium but has a lower atomic mass than either of these elements. What is the most likely identity of this element? F G H J Sodium eryllium alcium Rubidium

48 24 n unidentified element has many of the same physical and chemical properties as magnesium and strontium but has a lower atomic mass than either of these elements. What is the most likely identity of this element? F G H J Sodium eryllium alcium Rubidium

49 25 The elements from which of the following groups are most likely to react with potassium (K)? F Group 2 G Group 7 H Group 13 J Group 17

50 25 The elements from which of the following groups are most likely to react with potassium (K)? F Group 2 G Group 7 H Group 13 J Group 17

51 26 The elements of which of these groups on the periodic table are most resistant to forming compounds? Group 1 Group 9 Group 14 Group 18

52 26 The elements of which of these groups on the periodic table are most resistant to forming compounds? Group 1 Group 9 Group 14 Group 18

53 27 The bonding characteristics of oxygen are most similar to the bonding characteristics of hydrogen silicon helium sulfur

54 27 The bonding characteristics of oxygen are most similar to the bonding characteristics of hydrogen silicon helium sulfur

55 28 Which of these elements is most likely to donate one electron? F G H J e s Rn He

56 28 Which of these elements is most likely to donate one electron? F G H J e s Rn He

57 29 lpha particles are one type of radioactivity. These particles have a nucleus of two protons and two neutrons but have no orbital electrons. ased on this information, it can be inferred that alpha particles are positive ions of the element F G H J actinium curium radium helium

58 29 lpha particles are one type of radioactivity. These particles have a nucleus of two protons and two neutrons but have no orbital electrons. ased on this information, it can be inferred that alpha particles are positive ions of the element F G H J actinium curium radium helium

59 30 certain atom has a nucleus containing six protons and eight neutrons and has six electrons orbiting the nucleus. This atom is a form of the element silicon carbon magnesium calcium

60 30 certain atom has a nucleus containing six protons and eight neutrons and has six electrons orbiting the nucleus. This atom is a form of the element silicon carbon magnesium calcium

61 31 alcium ions play an important role in the function of neurons in the brain. Elements that are chemically similar to calcium can interfere with the function of neurons. Which of the following is most likely to imitate calcium s role in the function of neurons? F G H J Sodium Potassium Strontium Rubidium

62 31 alcium ions play an important role in the function of neurons in the brain. Elements that are chemically similar to calcium can interfere with the function of neurons. Which of the following is most likely to imitate calcium s role in the function of neurons? F G H J Sodium Potassium Strontium Rubidium

63 o=x=o 32 The model above shows how an unidentified element, X, forms covalent bonds with oxygen. In which group on the periodic table does Element X most likely belong? F Group 6 G Group 12 H Group 14 J Group 18

64 o=x=o 32 The model above shows how an unidentified element, X, forms covalent bonds with oxygen. In which group on the periodic table does Element X most likely belong? F Group 6 G Group 12 H Group 14 J Group 18

65 33 In which model of the periodic table does the shaded area show the location of elements that require the least energy to lose one electron?

66 33 In which model of the periodic table does the shaded area show the location of elements that require the least energy to lose one electron?

67 34 The ionic compounds that result from combining Group 2 and Group 16 elements have a 1:1 ratio because Group 2 elements are electrically neutral Group 2 elements have two valence electrons Group 2 elements contain neutrons in the nucleus Group 2 contains more elements than other groups

68 34 The ionic compounds that result from combining Group 2 and Group 16 elements have a 1:1 ratio because Group 2 elements are electrically neutral Group 2 elements have two valence electrons Group 2 elements contain neutrons in the nucleus Group 2 contains more elements than other groups

69 35 Silver bromide is a type of halide. Elements from which group in the periodic table are necessary to form halide compounds? Group 4 Group 5 Group 10 Group 17

70 35 Silver bromide is a type of halide. Elements from which group in the periodic table are necessary to form halide compounds? Group 4 Group 5 Group 10 Group 17

71 36 Elements found in which shaded area of this periodic table undergo the fewest chemical reactions? Q R S T

72 36 Elements found in which shaded area of this periodic table undergo the fewest chemical reactions? Q R S T

73 37 ccording to the periodic table, which of these elements will form an ion with a 2 charge? F G H J S Mg F Rb

74 37 ccording to the periodic table, which of these elements will form an ion with a 2 charge? F G H J S Mg F Rb

75 38 The diagram shows physical changes that occur in the water cycle. Which of these shows condensation? Q R S T

76 38 The diagram shows physical changes that occur in the water cycle. Which of these shows condensation? Q R S T

77 39 Which process in the rock cycle is most likely responsible for moon rocks being converted to lunar soil? Metamorphism Weathering Sedimentation Volcanism

78 39 Which process in the rock cycle is most likely responsible for moon rocks being converted to lunar soil? Metamorphism Weathering Sedimentation Volcanism

79 40 Which of these changes in rocks is a physical change? cid rain damaging marble Iron in rock combining with oxygen to form hematite arbonic acid weathering limestone n ice wedge shattering a slab of shale

80 40 Which of these changes in rocks is a physical change? cid rain damaging marble Iron in rock combining with oxygen to form hematite arbonic acid weathering limestone n ice wedge shattering a slab of shale

81 41 Which of the following processes is an example of a physical change associated with an oak tree? ecomposition of bark by bracket fungi Starches and sugars being broken down during energy production Water and carbon dioxide being converted to glucose Evaporation of water from the surfaces of leaves

82 41 Which of the following processes is an example of a physical change associated with an oak tree? ecomposition of bark by bracket fungi Starches and sugars being broken down during energy production Water and carbon dioxide being converted to glucose Evaporation of water from the surfaces of leaves

83 42 ompounds with the same chemical composition may have different densities because they have differences in reactivity are able to bond with oxygen vary in solubility exist in different phases

84 42 ompounds with the same chemical composition may have different densities because they have differences in reactivity are able to bond with oxygen vary in solubility exist in different phases

85 43 Limestone is a sedimentary rock consisting mostly of calcium carbonate (ao 3 ). Which process is most likely to cause a chemical change to limestone? F G H J Freezing water cracking limestone Flowing water eroding a limestone riverbed cid rain forming puddles on limestone oastal waves dissolving limestone sediments

86 43 Limestone is a sedimentary rock consisting mostly of calcium carbonate (ao 3 ). Which process is most likely to cause a chemical change to limestone? F G H J Freezing water cracking limestone Flowing water eroding a limestone riverbed cid rain forming puddles on limestone oastal waves dissolving limestone sediments

87 44 Which of the following is an example of a chemical change? ombustion of gasoline n apple being bitten n ice cube being swallowed bsorption of a water molecule

88 44 Which of the following is an example of a chemical change? ombustion of gasoline n apple being bitten n ice cube being swallowed bsorption of a water molecule

89 How Portland ement Is Made 45 Portland cement is used to make concrete, a very common construction material. Which step in the production of portland cement causes a chemical change? W X Y Z

90 How Portland ement Is Made 45 Portland cement is used to make concrete, a very common construction material. Which step in the production of portland cement causes a chemical change? W X Y Z

91 46 Which of the following describes a chemical change that J.. van Helmont could have observed? F G H J Limestone combined with an acid produces a gas. Solid carbon dioxide becomes a gas at room temperature. Limestone combined with sand results in a mixture. iluting an acid with water produces a solution.

92 46 Which of the following describes a chemical change that J.. van Helmont could have observed? F G H J Limestone combined with an acid produces a gas. Solid carbon dioxide becomes a gas at room temperature. Limestone combined with sand results in a mixture. iluting an acid with water produces a solution.