Chapter 9
Matching
Match each item with the correct statement below.
a. / monatomic ion / f. / cationb. / acid / g. / binary compound
c. / base / h. / anion
d. / law of definite proportions / i. / polyatomic ion
e. / law of multiple proportions
____ 1. consists of a single atom with a positive or negative charge
____ 2. atom or group of atoms having a negative charge
____ 3. atom or group of atoms having a positive charge
____ 4. tightly-bound group of atoms that behaves as a unit and carries a net charge
____ 5. compound composed of two different elements
____ 6. produces a hydrogen ion when dissolved in water
____ 7. produces a hydroxide ion when dissolved in water
____ 8. In any chemical compound, the masses of elements are always in the same proportion by mass.
____ 9. when two elements form more than one compound, the masses of one element that combine with the same mass of the other element are in the ratio of small, whole numbers
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____ 10. What type of ions have names ending in -ide?
a. / only cations / c. / only metal ionsb. / only anions / d. / only gaseous ions
____ 11. When Group 2A elements form ions, they ____.
a. / lose two protons / c. / lose two electronsb. / gain two protons / d. / gain two electrons
____ 12. What is the correct name for the N ion?
a. / nitrate ion / c. / nitride ionb. / nitrogen ion / d. / nitrite ion
____ 13. When naming a transition metal ion that can have more than one common ionic charge, the numerical value of the charge is indicated by a ____.
a. / prefix / c. / Roman numeral following the nameb. / suffix / d. / superscript after the name
____ 14. Aluminum is a group 3A metal. Which ion does A1 typically form?
a. / Al / c. / Alb. / Al / d. / Al
____ 15. In which of the following are the symbol and name for the ion given correctly?
a. / Fe: ferrous ion; Fe: ferric ionb. / Sn: stannic ion; Sn: stannous ion
c. / Co: cobalt(II) ion; Co: cobaltous ion
d. / Pb: lead ion; Pb: lead(IV) ion
____ 16. Which of the following correctly provides the name of the element, the symbol for the ion, and the name of the ion?
a. / fluorine, F, fluoride ion / c. / copper, Cu, cuprous ionb. / zinc, Zn, zincate ion / d. / sulfur, S, sulfurous ion
____ 17. The nonmetals in Groups 6A and 7A ____.
a. / lose electrons when they form ionsb. / have a numerical charge that is found by subtracting 8 from the group number
c. / all have ions with a –1 charge
d. / end in -ate
____ 18. What determines that an element is a metal?
a. / the magnitude of its charge / c. / when it is a Group A elementb. / the molecules that it forms / d. / its position in the periodic table
____ 19. What is the Stock name for chromic ion?
a. / chromium(I) ion / c. / chromium(III) ionb. / chromium(II) ion / d. / chromium(IV) ion
____ 20. Which of the following is NOT a cation?
a. / iron(III) ion / c. / Cab. / sulfate / d. / mercurous ion
____ 21. In which of the following are the symbol and name for the ion given correctly?
a. / NH: ammonia; H: hydride / c. / OH: hydroxide; O: oxideb. / CHO: acetate; CO : oxalite / d. / PO: phosphate; PO: phosphite
____ 22. Which of the following correctly provides the names and formulas of polyatomic ions?
a. / carbonate: HCO; bicarbonate: COb. / nitrite: NO; nitrate: NO
c. / sulfite: S; sulfate: SO
d. / chromate: CrO; dichromate: CrO
____ 23. An -ate or -ite at the end of a compound name usually indicates that the compound contains ____.
a. / fewer electrons than protons / c. / only two elementsb. / neutral molecules / d. / a polyatomic anion
____ 24. Why are systematic names preferred over common names?
a. / Common names do not provide information about the chemical composition of the compound.b. / Common names are derived from the method used to obtain the compound.
c. / Common names were assigned by the scientist who discovered the compound.
d. / Common names are not very descriptive.
____ 25. Which of the following compounds contains the Mn ion?
a. / MnS / c. / MnOb. / MnBr / d. / MnO
____ 26. How are chemical formulas of binary ionic compounds generally written?
a. / cation on left, anion on rightb. / anion on left, cation on right
c. / Roman numeral first, then anion, then cation
d. / subscripts first, then ions
____ 27. Which of the following is true about the composition of ionic compounds?
a. / They are composed of anions and cations.b. / They are composed of anions only.
c. / They are composed of cations only.
d. / They are formed from two or more nonmetallic elements.
____ 28. Which of the following formulas represents an ionic compound?
a. / CS / c. / NOb. / BaI / d. / PCl
____ 29. Which element, when combined with fluorine, would most likely form an ionic compound?
a. / lithium / c. / phosphorusb. / carbon / d. / chlorine
____ 30. Which of the following shows correctly an ion pair and the ionic compound the two ions form?
a. / Sn, N; SnN / c. / Cr, I; CrIb. / Cu, O; CuO / d. / Fe, O; FeO
____ 31. In which of the following are the formula of the ionic compound and the charge on the metal ion shown correctly?
a. / UCl, U / c. / IrS, Irb. / ThO, Th / d. / NiO, Ni
____ 32. Which of the following correctly represents an ion pair and the ionic compound the ions form?
a. / Ca, F; CaF / c. / Ba, O; BaOb. / Na, Cl; NaCl / d. / Pb, O; PbO
____ 33. In which of the following is the name and formula given correctly?
a. / sodium oxide, NaO / c. / cobaltous chloride, CoClb. / barium nitride, BaN / d. / stannic fluoride, SnF
____ 34. Which of the following compounds contains the lead(II) ion?
a. / PbO / c. / Pb2Ob. / PbCl4 / d. / Pb2S
____ 35. Which set of chemical name and chemical formula for the same compound is correct?
a. / iron(II) oxide, FeO / c. / tin(IV) bromide, SnBrb. / aluminum fluorate, AlF / d. / potassium chloride, KCl
____ 36. What is the correct formula for potassium sulfite?
a. / KHSO / c. / KSOb. / KHSO / d. / KSO
____ 37. Which set of chemical name and chemical formula for the same compound is correct?
a. / ammonium sulfite, (NH)S / c. / lithium carbonate, LiCOb. / iron(III) phosphate, FePO / d. / magnesium dichromate, MgCrO
____ 38. What type of compound is CuSO?
a. / monotomic ionic / c. / polyatomic ionicb. / polyatomic covalent / d. / binary molecular
____ 39. Which polyatomic ion forms a neutral compound when combined with a group 1A monatomic ion in a 1:1 ratio?
a. / ammonium / c. / nitrateb. / carbonate / d. / phosphate
____ 40. Sulfur hexafluoride is an example of a ____.
a. / monatomic ion / c. / binary compoundb. / polyatomic ion / d. / polyatomic compound
____ 41. Molecular compounds are usually ____.
a. / composed of two or more transition elementsb. / composed of positive and negative ions
c. / composed of two or more nonmetallic elements
d. / exceptions to the law of definite proportions
____ 42. What is the ending for the names of all binary compounds, both ionic and molecular?
a. / -ide / c. / -adeb. / -ite / d. / -ate
____ 43. Binary molecular compounds are made of two ____.
a. / metallic elements / c. / polyatomic ionsb. / nonmetallic elements / d. / cations
____ 44. In naming a binary molecular compound, the number of atoms of each element present in the molecule is indicated by ____.
a. / Roman numerals / c. / prefixesb. / superscripts / d. / suffixes
____ 45. Which of the following correctly shows a prefix used in naming binary molecular compounds with its corresponding number?
a. / deca-, 7 / c. / hexa-, 8b. / nona-, 9 / d. / octa-, 4
____ 46. Which of the following is a binary molecular compound?
a. / BeHCO / c. / AgIb. / PCl / d. / MgS
____ 47. Which of the following formulas represents a molecular compound?
a. / ZnO / c. / SOb. / Xe / d. / BeF
____ 48. Consider a mystery compound having the formula MT. If the compound is not an acid, if it contains only two elements, and if M is not a metal, which of the following is true about the compound?
a. / It contains a polyatomic ion. / c. / Its name ends in -ic.b. / Its name ends in -ite or -ate. / d. / It is a binary molecular compound.
____ 49. When dissolved in water, acids produce ____.
a. / negative ions / c. / hydrogen ionsb. / polyatomic ions / d. / oxide ions
____ 50. When naming acids, the prefix hydro- is used when the name of the acid anion ends in ____.
a. / -ide / c. / -ateb. / -ite / d. / -ic
____ 51. Which of the following shows both the correct formula and correct name of an acid?
a. / HClO, chloric acid / c. / HPO, phosphoric acidb. / HNO, hydronitrous acid / d. / HI, iodic acid
____ 52. What is the name of HSO?
a. / hyposulfuric acid / c. / sulfuric acidb. / hydrosulfuric acid / d. / sulfurous acid
____ 53. When the name of an anion that is part of an acid ends in -ite, the acid name includes the suffix ____.
a. / -ous / c. / -ateb. / -ic / d. / -ite
____ 54. What is the formula for sulfurous acid?
a. / HSO / c. / HSOb. / HSO / d. / HS
____ 55. What is the formula for phosphoric acid?
a. / HPO / c. / HPOb. / HPO / d. / HPO
____ 56. What is the formula for hydrosulfuric acid?
a. / HS / c. / HSOb. / HSO / d. / HS
____ 57. Which of the following are produced when a base is dissolved in water?
a. / hydronium ions / c. / hydrogen ionsb. / hydroxide ions / d. / ammonium ions
____ 58. How are bases named?
a. / like monatomic elements / c. / like ionic compoundsb. / like polyatomic ions / d. / like molecular compounds
____ 59. In any chemical compound, the elements are always combined in the same proportion by ____.
a. / charge / c. / volumeb. / mass / d. / density
____ 60. Which of the following pairs of substances best illustrates the law of multiple proportions?
a. / H and O / c. / CaCl and CaBrb. / PO and PH / d. / NO and NO
____ 61. Select the correct formula for sulfur hexafluoride.
a. / SF / c. / FSb. / FSO / d. / SF
____ 62. What is the correct name for the compound CoCl?
a. / cobalt(I) chlorate / c. / cobalt(II) chlorateb. / cobalt(I) chloride / d. / cobalt(II) chloride
____ 63. Suppose you encounter a chemical formula with H as the cation. What do you know about this compound immediately?
a. / It is a polyatomic ionic compound. / c. / It is a base.b. / It is an acid. / d. / It has a 1 charge.
____ 64. What is the correct formula for barium chlorate?
a. / Ba(ClO) / c. / Ba(ClO)b. / Ba(ClO) / d. / BaCl
____ 65. What is the correct formula for calcium dihydrogen phosphate?