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- 1. Open EndedTrue or false : All heterogeneous mixtures must contain three or more substances.
- 2. Open EndedTrue or false : Pure substances cannot have a variable composition.
- 3. Open EndedTrue or false : Substances maintain their identity in a heterogeneous mixture but not in a homogeneous mixture.
- 4. Open EndedTrue or false : Pure substances are seldom encountered in the "everyday" world.
- 5. Open EndedTrue or false : All homogeneous mixtures must contain at least two substances.
- 6. Open EndedTrue or false : Heterogeneous mixtures, but not homogeneous mixtures, can have a variable composition.
- 7. Open EndedTrue or false : Pure substances cannot be separated into other kinds of matter by physical means.
- 8. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : 2 substances present, 2 phases present
- 9. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : 2 substances present, 1 phase present
- 10. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : 1 substance present, 2 phases present
- 11. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : 3 substances present, 3 phases present
- 12. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : 3 substances present, 1 phase present
- 13. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : 1 substance present, 3 phases present
- 14. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : 1 substance present, 1 phase present
- 15. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : 2 substances present, 3 phases present
- 16. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance and how many phases : water and dissolved salt
- 17. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance and how many phases : water and sand
- 18. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance and how many phases : water, ice, and oil
- 19. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance and how many phases : water, dissolved sugar, and undissolved sugar
- 20. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : water and dissolved sugar
- 21. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : water and oil
- 22. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance : water, wax, and pieces of copper metal
- 23. Open EndedHomogenous mixture, heterogeneous mixture, or pure substance and how many phases : water, dissolved salt, and dissolved sugar
- 24. Open EndedClassify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information : Analysis with an elaborate instrument indicates that substance A contains two elements.
- 25. Open EndedClassify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information : Substance B decomposes upon heating.
- 26. Open EndedClassify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information : Heating substance C to causes no change in it.
- 27. Open EndedClassify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information : Heating substance D to causes it to change from a solid to a liquid.
- 28. Open EndedClassify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information : Substance A cannot be broken down into simpler substances by chemical means.
- 29. Open EndedClassify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information : Substance B cannot be broken down into simpler substances by physical means.
- 30. Open EndedClassify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information : Substance C readily dissolves in water.
- 31. Open EndedClassify each of the pure substances A through D as elements or compounds, or indicate that no such classification is possible because of insufficient information : Substance D readily reacts with the element chlorine.
- 32. Open EndedTrue or false : Both elements and compounds are pure substances.
- 33. Open EndedTrue or false : A compound results from the physical combination of two or more elements.
- 34. Open EndedTrue or false : In order for matter to be heterogeneous, at least two compounds must be present.
- 35. Open EndedTrue or false : Compounds, but not elements, can have a variable composition.
- 36. Open EndedElement, compound, or mixture : 1 substance present, 3 elements present
- 37. Open EndedElement, compound, or mixture : 2 substances present, 1 phase present
- 38. Open EndedElement, compound, or mixture : 1 substance present, 1 phase present, substance cannot be decomposed using chemical means
- 39. Open EndedElement, compound, or mixture : 2 elements present, composition is variable
- 40. Open EndedElement, compound, or mixture : 1 substance present, 2 elements present
- 41. Open EndedElement, compound, or mixture : 2 substances present, 2 phases present
- 42. Open EndedElement, compound, or mixture : 1 substance present, 1 phase present, substance can be decomposed using chemical means
- 43. Open EndedElement, compound, or mixture : 3 elements present, composition is definite and constant
- 44. Open EndedHeterogeneous mixture, a homogeneous mixture, a compound, or an element : a blue-colored, single-phase liquid that when boiled away (evaporated) leaves behind a solid residue
- 45. Open EndedHeterogeneous mixture, a homogeneous mixture, a compound, or an element : a "cloudy" liquid that separates into two layers upon standing overnight
- 46. Open EndedHeterogeneous mixture, a homogeneous mixture, a compound, or an element : a nonuniform, white crystalline substance, part of which dissolves in alcohol and part of which does not dissolve in alcohol
- 47. Open EndedHeterogeneous mixture, a homogeneous mixture, a compound, or an element : a colorless gas that cannot be separated into simpler substances using physical means and that reacts with the metal magnesium to produce both a magnesium - oxygen compound and a magnesium - nitrogen compound
- 48. Open EndedTrue or false : A mixture containing copper and sulfur can have a variable composition.
- 49. Open EndedTrue or false : In a mixture of copper and sulfur, the two elements maintain their individual properties.
- 50. Open EndedTrue or false : In a compound containing copper and sulfur, physical methods can be used to separate the substances present.
- 51. Open EndedTrue or false : In a compound containing copper and sulfur, the two elements are chemically combined rather than physically combined.
- 52. Open EndedMost abundant element(s) in the universe :
- 53. Open EndedMost abundant element(s) in the Earth's crust :
- 54. Open EndedAnything that takes up space or has mass :
- 55. Fill in the BlankThe universe is composed entirely of _____ and _____.
- 56. Fill in the BlankForms of energy such as heat, light, and electricity are not considered to be _____.
- 57. Open EndedStates of matter :
- 58. Open EndedCharacterized by a definite shape and a definite volume :
- 59. Open EndedCharacterized by an indefinite shape and a definite volume; takes the shape of its container to the extent that it fills the container :
- 60. Open EndedCharacterized by an indefinite shape and volume; completely fills its container, adopting both the container's volume and its shape :
- 61. Open EndedState of matter of a particular substance depends on :
- 62. Open EndedDistinguishing characteristic of a substance that is used in its identification and description :
- 63. Open EndedCharacteristic that can be observed without changing the basic identity of a substance :
- 64. Open EndedCharacteristic that describes the way a substance undergoes or resists change to form a new substance :
- 65. Open EndedChange triggered by the presence of energy :
- 66. Open EndedProcess in which a substance changes its physical appearance but not its chemical composition :
- 67. Open EndedProcess in which chemical composition of a substance changes :
- 68. Open EndedSingle kind of matter that cannot be separated into other kinds of matter by any physical means :
- 69. Open EndedPhysical combination of two or more pure substances; have variable chemical composition; can be separated by physical methods :
- 70. Open EndedContains visibly different phases, each of which has different properties :
- 71. Open EndedContains only one visibly distinct phase, which has uniform properties throughout :
- 72. Open EndedPure substance that cannot be broken down into simpler pure substances by chemical means such as a chemical reaction, an electric current, heat, or a beam of light :
- 73. Open EndedPure substance that can be broken down into two or more simpler pure substances by chemical or physical means; definite chemical composition; cannot be separated by physical methods :
- 74. Open EndedNumber of known elements :
- 75. Open EndedNumber of naturally occuring elements :
- 76. Open EndedNumber of synthesized elements :
- 77. Fill in the Blank1 or 2 letter designation for an element derived from the element's name; 2 letter symbols can be the first 2 letters of the element's name; first letter of a _____ _____ is always capitalized and the second is not
- 78. Open EndedElement names can be derived from :
- 79. Open EndedSmallest particle of an element that can exist and still have the properties of the element :
- 80. Open EndedGroup of two or more atoms that functions as a unit because the atoms are tightly bound together :
- 81. Open EndedContains 2 atoms :
- 82. Open EndedContains 3 atoms :
- 83. Open EndedAll atoms present are of the same kind; must be an element :
- 84. Open Ended2 or more kinds of atoms are present; must be a compound :
- 85. Fill in the Blank_____ _____ consist of : symbols of each element in a compound with numerical subscripts to indicate the number of atoms of each element in the compound.
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