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Physical Boot Camp 5.5D Identify changes that can occur in the physical properties of the ingredients of solutions such as dissolving salt in water or.

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Presentation on theme: "Physical Boot Camp 5.5D Identify changes that can occur in the physical properties of the ingredients of solutions such as dissolving salt in water or."— Presentation transcript:

1 Physical Boot Camp 5.5D Identify changes that can occur in the physical properties of the ingredients of solutions such as dissolving salt in water or adding lemon juice to water.

2 STAAR 2013 #40; RC1; Supporting 1. A worker built a sidewalk and pressed some large salt particles into the concrete while it was still wet. When the concrete was dry, the worker washed the sidewalk with the water. The picture below shoes the sidewalk after it was washed: What most likely happened to the salt? F. It evaporated into a gas G. It turned into concrete H. It dissolved in the water J. It turned into a solid

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4 2004 TAKS Information Booklet, #10 2. A student places a sugar cube in a beaker of water. What change will occur? A The sugar cube will not change. B More water will be formed. C The sugar cube will become smaller. D The water will form crystals.

5 2004 TAKS Information Booklet, #10 2. A student places a sugar cube in a beaker of water. What change will occur? A The sugar cube will not change. B More water will be formed. C The sugar cube will become smaller. D The water will form crystals.

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8 TAKS Study Guide, #34 4. River water is a solution because it — A is a liquid, which has no definite shape B contains dissolved minerals and salts C carries sand, clay, and other sediment D is a compound made up of two elements

9 TAKS Study Guide, #34 4. River water is a solution because it — A is a liquid, which has no definite shape B contains dissolved minerals and salts C carries sand, clay, and other sediment D is a compound made up of two elements

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14 2006—#27 (86%) 7. A teaspoon of clean, dry sand is added to a cup of warm saltwater. What is most likely to happen after the mixture is stirred and then placed on a table for five minutes? A The amount of water will increase. B The salt will float to the top. C The sand will settle to the bottom. D The cup will heat up.

15 2006—#27 (86%) 7. A teaspoon of clean, dry sand is added to a cup of warm saltwater. What is most likely to happen after the mixture is stirred and then placed on a table for five minutes? A The amount of water will increase. B The salt will float to the top. C The sand will settle to the bottom. D The cup will heat up.

16 2009—#9 (89%) 8. Which process will separate the sugar from mixture of sugar and water? A Stirring the mixture BEvaporating the water C Adding more water D Adding more sugar

17 2009—#9 (89%) 8. Which process will separate the sugar from mixture of sugar and water? A Stirring the mixture BEvaporating the water C Adding more water D Adding more sugar

18 2010—#1 9. Which of the following is the best evidence that sugar has dissolved in water? A The sugar seems to disappear in the water. BThe water temperature increases. C Some sugar turns into crystals. D Some bubbles form in the water.

19 2010—#1 9. Which of the following is the best evidence that sugar has dissolved in water? A The sugar seems to disappear in the water. BThe water temperature increases. C Some sugar turns into crystals. D Some bubbles form in the water.

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22 11. If purple drink mix is added to water, what change will occur to the water? AThe drink mix will cause the water to freeze. BThe water will totally disappear. CThe drink mix will heat the water. DThe water will change color.

23 11. If purple drink mix is added to water, what change will occur to the water? AThe drink mix will cause the water to freeze. BThe water will totally disappear. CThe drink mix will heat the water. DThe water will change color.

24 12. A science class mixed a white powder and a clear liquid together in a test tube. The mixture foamed up and flowed over the top of the test tube. What are the two substances MOST likely to be? Asalt and water BSalt and vinegar CBaking soda and water DBaking soda and vinegar

25 12. A science class mixed a white powder and a clear liquid together in a test tube. The mixture foamed up and flowed over the top of the test tube. What are the two substances MOST likely to be? Asalt and water BSalt and vinegar CBaking soda and water DBaking soda and vinegar

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28 14. When sugar seems to disappear in water, it really— Adissolves Bcondenses Cevaporates Dprecipitates

29 14. When sugar seems to disappear in water, it really— Adissolves Bcondenses Cevaporates Dprecipitates

30 15. A tablespoon of sugar is poured into a beaker of warm water and stirred briefly. What change will occur? AThe sugar will soak up the water. BThe water will change colors. CThe sugar will sink to the bottom. DThe sugar will dissolve in the water.

31 15. A tablespoon of sugar is poured into a beaker of warm water and stirred briefly. What change will occur? AThe sugar will soak up the water. BThe water will change colors. CThe sugar will sink to the bottom. DThe sugar will dissolve in the water.

32 16. Which of the following is the best example of the process of dissolving? AMixing chocolate powder in a glass of milk BPouring sand into a beaker of warm water CShaking a bottle of Italian salad dressing DPouring milk into a cup of hot coffee

33 16. Which of the following is the best example of the process of dissolving? AMixing chocolate powder in a glass of milk BPouring sand into a beaker of warm water CShaking a bottle of Italian salad dressing DPouring milk into a cup of hot coffee

34 17. What happens to sugar particles as they dissolve in water? AThe hot water changes the sugar into a new kind of water. BThe sugar particles melt very quickly in the hot water. CThe sugar particles spread out and fill in spaces in the water. DThe sugar particles are changed into a different kind of matter.

35 17. What happens to sugar particles as they dissolve in water? AThe hot water changes the sugar into a new kind of water. BThe sugar particles melt very quickly in the hot water. CThe sugar particles spread out and fill in spaces in the water. DThe sugar particles are changed into a different kind of matter.

36 18. Which mixture below is also a solution? AWater and hot chocolate mix BSoil and rocks CTrail mix DTossed salad (no dressing)

37 18. Which mixture below is also a solution? AWater and hot chocolate mix BSoil and rocks CTrail mix DTossed salad (no dressing)

38 19. What property of chocolate powder does not change when it dissolves in milk? AShape BSize CTexture DTaste

39 19. What property of chocolate powder does not change when it dissolves in milk? AShape BSize CTexture DTaste

40 20. When one teaspoon of sugar is mixed into 40 mL of very hot water, what will probably happen to the sugar? AThe sugar will dissolve into the water. BThe sugar will float on top of the water. CThe sugar will float away with the steam from the water. DThe sugar and the water will settle into layers.

41 20. When one teaspoon of sugar is mixed into 40 mL of very hot water, what will probably happen to the sugar? AThe sugar will dissolve into the water. BThe sugar will float on top of the water. CThe sugar will float away with the steam from the water. DThe sugar and the water will settle into layers.

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44 22. A suspension is a special kind of mixture. In a suspension, particles of a solid are suspended in a liquid and will not dissolve. The particles are large enough to be seen and the suspension appears cloudy. If the particles settle to the bottom, shaking and stirring will suspend the particles again. Which of the following is a suspension? AKool-Aid® mixed with water BSpices in vinegar and oil (salad dressing) CChocolate powder stirred into a glass of milk DMilk stirred into a cup of hot coffee

45 22. A suspension is a special kind of mixture. In a suspension, particles of a solid are suspended in a liquid and will not dissolve. The particles are large enough to be seen and the suspension appears cloudy. If the particles settle to the bottom, shaking and stirring will suspend the particles again. Which of the following is a suspension? AKool-Aid® mixed with water BSpices in vinegar and oil (salad dressing) CChocolate powder stirred into a glass of milk DMilk stirred into a cup of hot coffee

46 23. When the ingredients for a chocolate cake are being mixed, the cake batter is like a thick, brown soup. Which physical property of the cake is the SAME after the batter is baked? AColor BSize CShape DTexture

47 23. When the ingredients for a chocolate cake are being mixed, the cake batter is like a thick, brown soup. Which physical property of the cake is the SAME after the batter is baked? AColor BSize CShape DTexture

48 24. Large deposits of salt are often found in deserts. For this salt to be usable, it must be separated from sand. If an engineer were designing a process to separate salt from sand, which of these differences would be the MOST useful? ASalt and sand are different colors. BSalt dissolves in water, but sand does not. CGrains of sand are harder than grains of salt. DGrains of salt and grains of sand have different shapes.

49 24. Large deposits of salt are often found in deserts. For this salt to be usable, it must be separated from sand. If an engineer were designing a process to separate salt from sand, which of these differences would be the MOST useful? ASalt and sand are different colors. BSalt dissolves in water, but sand does not. CGrains of sand are harder than grains of salt. DGrains of salt and grains of sand have different shapes.

50 25. What process results from the spreading of sugar particles throughout water? AMixing BMelting CDissolving DDistributing

51 25. What process results from the spreading of sugar particles throughout water? AMixing BMelting CDissolving DDistributing

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54 27. Which property of a solution below is the same as the properties of its ingredients? ASugar water tastes sweet. BSaltwater tastes salty. CSugar water is a liquid. DAir is a gas.

55 27. Which property of a solution below is the same as the properties of its ingredients? ASugar water tastes sweet. BSaltwater tastes salty. CSugar water is a liquid. DAir is a gas.

56 28. Which property of a sugar cube does not change when it dissolves? AColor BTaste CShape DTexture

57 28. Which property of a sugar cube does not change when it dissolves? AColor BTaste CShape DTexture

58 29. A student places a cube of sugar in a cup of hot tea and stirs the tea with a spoon. What change will occur? A The tea will change temperature and get hotter. B The sugar cube will dissolve and get smaller. C The sugar cube and the tea will not change. D The tea will dissolve in the sugar cube.

59 29. A student places a cube of sugar in a cup of hot tea and stirs the tea with a spoon. What change will occur? A The tea will change temperature and get hotter. B The sugar cube will dissolve and get smaller. C The sugar cube and the tea will not change. D The tea will dissolve in the sugar cube.

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66 33. A student mixed together 100 mL of warm water, 10 mL of salt, and 10 mL of paper clips in a large beaker. He left the beaker sitting on the table for next to a window for 2 weeks. What was left in the beaker after the two weeks? AOnly the salt BSome water and the salt CThe salt and the paper clips DSome water and the paper clips

67 33. A student mixed together 100 mL of warm water, 10 mL of salt, and 10 mL of paper clips in a large beaker. He left the beaker sitting on the table for next to a window for 2 weeks. What was left in the beaker after the two weeks? AOnly the salt BSome water and the salt CThe salt and the paper clips DSome water and the paper clips

68 34. When 5 grams of salt is added to 100 mL of water, which of the following changes will occur? AThe salt will float. BThe water will crystallize. CThe salt will dissolve. DThe water will freeze.

69 34. When 5 grams of salt is added to 100 mL of water, which of the following changes will occur? AThe salt will float. BThe water will crystallize. CThe salt will dissolve. DThe water will freeze.

70 35. Which statement BEST describes what happens if Jonathan stirs a spoonful of sand and a spoonful of sugar into a tall glass of warm water? A The sugar will dissolve, but the sand will not. BSome of the sand and some of the sugar will dissolve. CAll of the sand and all of the sugar will dissolve. DNone of the sugar and none of the sand will dissolve.

71 35. Which statement BEST describes what happens if Jonathan stirs a spoonful of sand and a spoonful of sugar into a tall glass of warm water? A The sugar will dissolve, but the sand will not. BSome of the sand and some of the sugar will dissolve. CAll of the sand and all of the sugar will dissolve. DNone of the sugar and none of the sand will dissolve.

72 36. Which statement about solutions is correct? A. All solutions contain more than two substances. B. A solution can only be created from liquids. C. All mixtures are solutions. D. All solutions are mixtures. M.S. ?’s

73 36. Which statement about solutions is correct? A. All solutions contain more than two substances. (2 or more) B. A solution can only be created from liquids. C. All mixtures are solutions. D. All solutions are mixtures.

74 37. Students were preparing an experiment to determine the differences between a mixture and a solution. Before the experiment started, one student said, “I think the chicken broth is a solution.” This statement was an example of— A. a conclusion B. an observation C. an inference D. a hypothesis

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76 38. Salt crystals + water = solution. What happened to the salt and water? A. They combined physically to form a special mixture. B. The salt and water evaporated. C. The salt and water separated, forming layers. D. The salt melted the water.

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78 39. A student dissolves 20 grams of salt in a pan of 200 milliliters of water. The student places the pan over a hot stove. How much salt is left after all the water evaporates? A. There is no salt left because it evaporated with the water. B. 20 grams of salt is left after all the water evaporates. C. 10 grams of salt evaporates, leaving 10 grams in the pan. D. Neither the salt nor the water evaporates.

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80 40. A student makes a drink stirring lemon juice and sugar into a glass of water. Why is this drink considered a solution? A. The lemon juice and sugar change the taste of the water. B. The water changes the color. C. The lemon juice and sugar dissolve in the water. D. The student stirs the mixture.

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82 41. A beaker contains a mixture of salt, sand, gravel, and iron fillings. Which substance is soluble in water? A. salt B. sand C. iron fillings D. gravel

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84 42. What causes sugar to dissolve faster in hot water than in cold water? A. Cold water takes up less space than hot water. B. Cold water has faster moving particles than hot water. C. Hot water has faster moving particles than cold water. D. Hot water takes up more space than cold water.

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86 43. Which of the following has the greatest effect on the ability of a substance to dissolve in water? A. color B. volume C. buoyancy D. solubility

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88 44. Students are classifying substances. Which of the following substances is a solution? A. sand and water B. sugar and water C. spaghetti and meatballs D. soil and water

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90 45. During an experiment in class, several students made statements about solutions. Which statement made is NOT true? A. When sugar dissolves in water, the sugar is evenly distributed throughout the solution. B. Solutions can be classified as mixtures. C. Heating the water first causes salt to dissolve quicker. D. When salt is dissolved in water, parts of the solution taste saltier than others.

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92 46. Students experimented with different substances to determine which were soluble. The ingredients included lemon juice, sand, salt, and sugar. After repeated tests of each substance, the students concluded all of the following have the ability to dissolve EXCEPT— A. lemon juice B. sand C. salt D. sugar

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94 47. Which of the following pieces of equipment should be used to separate saltwater? A. hot plate B. magnet C. pan balance D. filter

95 47. Which of the following pieces of equipment should be used to separate saltwater? A. hot plate (to evaporate) B. magnet C. pan balance D. filter

96 48. Based on the information in the table, which substances could be sugar? A. 1 & 2 B. 2 & 4 C. 1 & 3 D. 2 & 3 SubstancePhysical PropertiesSoluble? 1Solid, sweet, grainyYes 2Solid, grainy, mineralNo 3Solid, white, grainyYes 4Liquid, sour, colorlessYes

97 48. Based on the information in the table, which substances could be sugar? A. 1 & 2 B. 2 & 4 C. 1 & 3 D. 2 & 3 SubstancePhysical PropertiesSoluble? 1Solid, sweet, grainyYes 2Solid, grainy, mineralNo 3Solid, white, grainyYes 4Liquid, sour, colorlessYes

98 49. What is one advantage of using repeated investigations to determine the solubility of lemon juice, sand, salt, and sugar? A. To decrease the reliability of results. B. To increase the reliability of results. C. To organize collection of data. D. To formulate testable hypotheses.

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100 50. After creating a solution of sugar water, students were instructed to clean their work areas and dispose of all materials properly. Which student made the best choice in disposing of a solution? A. Student A threw the solution in the trash can. B. Student B drank the solution. C. Student C poured the solution down the drain and rinsed the sink. D. Student D left the solution and materials on the table.

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102 51. In science class, students are combining materials to create solutions. In one experiment students add 250 milliliters of hot water to 25 milliliters sugar and record the time it takes the sugar to dissolve. Then, they add 250 milliliters room temperature water to 25 milliliters sugar and record the time it takes to dissolve. What is the variable in this experiment? A. the amount of sugar used B. the amount of water used C. the temperature of the water D. the time of day the students are performing the experiment

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104 52. Students are mixing an unknown solution. The teacher told them to follow lab safety rules. The following practices should be observed EXCEPT— A. tasting the solution B. wafting the air to smell the solution C. mixing the ingredients as directed by the teacher D. wearing protective equipment

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106 53. In an experiment, sand and sugar are mixed together in equal parts: Hypothesis: The sand cannot be separated from the sugar. Procedure: Pour mixture into a beaker. Add water to dissolve sugar. Filter mixture to remove sand. Evaporate the remaining liquid. Observe the remaining substance using a microscope. Observation: The substance observed under the microscope is sugar. Which conclusion can be made based on the information from the experiment? A. The hypothesis was proven correct because the sugar was not visible under the microscope. B. The hypothesis was proven incorrect because the sand and sugar mixture was separated by filter and evaporation. C. They hypothesis was proven correct because the sand and sugar mixture could not be separated. D. The hypothesis was proven incorrect because the sugar was dissolved in the water.

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