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- 1. Open EndedWhich of the following statements about the use of Roman numerals in naming and writing chemical formulas is correct? A. A Roman numeral is included for any metal that can form more than one monatomic cation. B. Roman numerals are used to designate the charge of both the cation and the anion in the ionic compound. C. The ionic compound Fe(III) has a charge of +3. D. A Roman numeral is always included when naming a transition metal cation.
- 2. Open EndedTrue or False: Roman numeral are used to designate the charge of both the cation and the anion in the ionic compound.
- 3. Open EndedAn ion with more electrons than its neutral atom is called a (n)
- 4. Open EndedAn ion with fewer electrons than its neutral atom is called a(n)
- 5. Open EndedThe charge of an ion with more electrons than its neutral atom is
- 6. Open EndedThe charge of an ion with fewer electrons than its neutral atom is
- 7. Open EndedWhich statement correctly describes the procedure used to predict the ion formed by a maingroup element?
- 8. Open EndedTrue or False A nonmetal LOSES enough electrons to attain the same number as the nearest noble gas.
- 9. Open EndedCharges are not written in the formula for an ionic compound because they are balanced.
- 10. Open EndedThe number of atoms/ions in the formula is indicated by a subscript
- 11. Open EndedIn the formula of an ionic compound the cation is always placed first.
- 12. Open Endedhydrogen bond
- 13. Fill in the BlankA unit that contains two or more elements covalently bonded together but that has an overall charge is called a _____ ion. Many _____ compounds contain such units.
- 14. Open EndedC2H3O2
- 15. Open EndedHCO3
- 16. Open EndedCO2− 3
- 17. Open EndedClO−
- 18. Open EndedNH4+
- 19. Open EndedConsider the formula for the ionic compound Na₂O. Which of the following interpret this formula? A. The cation in this compound is Na⁺. B. The subscript 2 refers to the number of O atoms/ions in the formula. C. The compound contains 2 Na⁺ ions for every 0² ion. D. The compound consists of Na₂O molecules.
- 20. Open EndedTrue or False. Ionic compounds consist of molecules.
- 21. Open EndedFe³⁺
- 22. Open EndedCr²⁺
- 23. Open EndedZn²⁺
- 24. Open EndedCu⁺
- 25. Open EndedWhich of the following molecules is polar? A. SiF₄ B. NH₃ C. CO₂ D. Br₂
- 26. Open EndedTrue or False. Ammonia contains relatively nonpolar bonds but is considered polar because it contains a non-bonded electron pair.
- 27. Open EndedTrue or False. CO₂ contains polar bonds but overall this molecule is nonpolar because its geometry is linear.
- 28. Fill in the BlankThe attraction of an atom for an electron in a chemical bond is called _____.
- 29. Open EndedWhich are correct? A. Mg₂O B. Ca₃N₂ C. CaO D. AgCl₂
- 30. Open EndedTrue or False. Only molecules use Greek prefixes to specify the number of atoms in the formula.
- 31. Open EndedThe correct systematic name for Li₃N
- 32. Fill in the BlankHydrogen bonding helps stabilize the structures of large biological molecules, such as proteins and ______ acids.
- 33. Open Endedwhich of the following options describe the correct format used to represent a chemical compound? A.The number of atoms/ions in the formula is indicated by a subscript. B. A subscript refers to the element following it. C. Charges must be specifically written in the formula for an ionic compound. D. In the formula of an ionic compound the cation is always placed first.
- 34. Open EndedWhat is the correct systematic name for the compound Na₂CO₃?
- 35. Open EndedWhich of the following ion combinations will result in an ionic compound that has a balanced number of positive and negative charges? A. Ca²⁺ B. Na⁺ and Br⁻ C. 2 Li⁺ and S²⁻ D. Mg²⁺ and Cl⁻ E. K⁺ and O²⁻
- 36. Fill in the BlankAn electric current requires movement of ____ particles, which could be electrons or ions. An electrolyte produces ______ in solution is therefore conductive.
- 37. Open EndedWhich of the following elements will form a cation? A. Ca B. P C. F D. Rb
- 38. Fill in the BlankA ______ force is a force that occurs between two molecules.
- 39. Open EndedWhich of the following options are correct systematic names for ionic compounds? A. chromium sulfide B. calcium diflouride C. potassium chloride D. sodium(I) bromide E. copper(II) oxide
- 40. Fill in the BlankLiquid _______ under high pressure has been offered as a green alternative to using organic solvents. However, by itself it does not effectively dissolve oils, waxes, and grease. Therefore, in order for it to be a viable green solvent a _____ mustbe added.
- 41. Open EndedWhich are correct? A. Na(OH) B. NaNO₃ C. Mg₃(PO₄)₂ D. KSO₄ E. CaCO₃
- 42. Open EndedBoth ozone and UV radiation have been used as alternative disinfectants to chlorine-containing compounds in the water treatment process. However, ____ must be added to the water after wither of these treatment methods in order to protect the water after it leaves the treatment site.
- 43. Open EndedNa⁺
- 44. Open EndedSO₄²⁻
- 45. Open EndedCO₃²⁻
- 46. Open EndedCl⁺
- 47. Fill in the BlankThe aim of the clean water act is to reduce ________ water pollution.
- 48. Open EndedWhat is the term used to describe any process that removes ions from salt water?
- 49. Open EndedWhich of the following statements describe the drawbacks of using chlorine-containing chemicals in the water treatment process? A. Chlorine does not eliminate most waterborne diseases. B. The taste and odor of residual chlorine is objectionable. C. Chlorine-containing chemicals can themselves be toxic. D. Chlorine can react with organic matter to form trihalomethanes (THMs)
- 50. Fill in the BlankIn general, covalent compounds that are _____ will be soluable in water. These compounds do not _____ into ions and are therefore nonelectrolytes.
- 51. Open EndedThe passage of water through a semipermeable membrane from a solution that is less concentrated to a solution that is more concentrated
- 52. Open EndedEmploying the use of pressure to force the movement of water through a semipermeable membrane from a solution that is more concentrated to one that is less concentrated
- 53. Fill in the BlankThe difference between water and H₂S is that water can form _________ between its molecules, whereas H₂S cannot
- 54. Open EndedWhich of the following are defined by the U.S. EPA as water contaminants? A. Substances that degrade the color of water B. Substances that are harmful to human teeth C. Substances that affect the physical properties of water. D. Substances that degrade the taste of water
- 55. Fill in the BlankA _____ solution is one in which water is the solvent
- 56. Open EndedWhich of the following species will be present in an aqueous solution of Na₂CO₃? A. Na₂²⁺ B. Na⁺ C. CO₂ D. O²⁻ E. CO₃²⁻
- 57. Open Ended1 ppb=
- 58. Open Ended1 ppm=
- 59. Fill in the Blankthe component that is most abundant in a solution is called the _____.
- 60. Fill in the Blankany dissolved substance is called a ___________.
- 61. Fill in the BlankThe chlorine-containing chemicals (HClO, ClO, and Cl₂) that remain in the water after chlorination step in the water treatment process are called _____ chlorine.
- 62. Open EndedAl₂(SO₄)₃ and Ca(OH)₂
- 63. Open EndedCl₂, NaClO, or Ca(ClO)₂
- 64. Open EndedF
- 65. Open Endedsometimes called a wetting agent, is a compound that helps polar and nonpolar compounds mix
- 66. Open Endedlow values for electronegativity
- 67. Open Endedhigh vales for electronegativity
- 68. Open EndedEPA regulate more than 90 known contaminants
- 69. Fill in the BlankA ________ is a homogeneous mixtures of a solvent and one or more solutes.
- 70. Fill in the Blankdead fish algal blooms and oxygen depletion are a result from ______
- 71. Open Endedtrue or false all ionic compounds are soluable in water
- 72. Open Endedthe ratio of amount of solute to amount of solution is the ___ of the solution
- 73. Open Endedpercent (%)
- 74. Open EndedParts per million (ppm)
- 75. Open Endedparts per billion (ppb)
- 76. Open Endedmolarity (M)
- 77. Fill in the BlankThe ______ of a substance is its mass per unit volume. The value for water is 1 g/cm³
- 78. Open Endedwater contracts when it freezes
- 79. Open EndedThe legal limit for the concentration of contaminat expressed in ppm or ppb
- 80. Open EndedThe maximum level of contaminant in drinking water at which no known or anticipated adverse effect on human health would occur, expressed in ppm or ppb
- 81. Fill in the BlankWhen an ionic compound is added to water, the ___will be attracted to the partially positive H atom of water an the _____ will be attracted to the partially negative O atom of water. As the compound dissolves the ions will ___ from each other.
- 82. Open EndedSOLUBILITY RULES Helpful 4 Confusing 2 All common compounds of NH₄⁺ and the Group 1 elements are soluble NO₃⁻, ClO₃⁻, ClO₄⁻, C₂H₃O₂.⁻ — all common nitrates, chlorates, perchlorates, and acetates are soluble. F⁻, Cl⁻, Br⁻, I⁻ — all halides are soluble EXCEPT those of Ag⁺, Hg₂²⁺, Pb²⁺ and the fluorides of Mg²⁺, Ca²⁺, Sr²⁺, and Ba²⁺. SO₄²⁻ — most sulfates are soluble EXCEPT those of Sr²⁺, Ba²⁺, Ca²⁺, Pb²⁺, Hg₂²⁺, and Hg²⁺. CO₃²⁻, C₂O₄²⁻, OH⁻, O²⁻, SO₃²⁻, PO₄³⁻, CrO₄²⁻, S²⁻ — all carbonates, oxalates, hydroxides, oxides, phosphates, chromates, and sulfides are insoluble. EXAMPLES Classify these compounds as soluble or insoluble in water: tin(II) sulfate — soluble (Rule 4) lead(II) chromate — insoluble (Rule 5) ammonium sulfide — soluble (Rule 1) strontium chlorate — soluble (Rule 2) silver bromide — insoluble (Rule 3) sodium phosphate — soluble (Rule 1) copper(I) carbonate — insoluble (Rule 5) barium sulfate — insoluble (Rule 4)
- 83. Open EndedA compound is classified as an alcohol if it contains what type of bond?
- 84. Open Endedwater that is safe to drink and cook with
- 85. Fill in the BlankBOD is a measure of the amount of dissolved _____ microorganisms use up as they decomprose organic wastes found in water.
- 86. Open Ended1 Flocculating agents 2 Flocculator 3 Charcoal and sand filter 4 Chlorination 5 Fluoridation
- 87. Open Endedtwo structure identities are
- 88. Open EndedTrue or False. Water has a tetrahedral shape.
- 89. Open Endedsewage plants use wetland to decrease nitrates and phosphates contamination in surface water
- 90. Fill in the BlankAn ionic compound will produce an aqueous solution when the attraction between the ___ molecules and the ions is greater than the attraction between the _______ themselves. Ion size and charge can also play a role in the solubility of ionic compounds.
- 91. Open EndedAqueous Solution
- 92. Open EndedNH₂SO₄ is insoluable in water
- 93. Open Endedsalt deposits
- 94. Fill in the Blanka water _______ is an estimate (for an individual or nation) of the amount of water required to sustain he consumption of goods and services.
- 95. Open Endedthe increase in concentration of certain persistent chemical in successively higher levels of the food chain is called ___.
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