Chemistry HW Chapter 9 (Due Feb 26 Test Feb 27)
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. atom or group of atoms having a negative charge
____ 2. compound composed of two different elements
____ 3. produces a hydroxide ion when dissolved in water
____ 4. In any chemical compound, the masses of elements are always in the same proportion by mass.
____ 5. 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 choice that best completes the statement or answers the question.
____ 6. What type of ions have names ending in -ide?
a. / only cations / c. / only metal ionsb. / only anions / d. / only gaseous ions
____ 7. What is the correct name for the N ion?
a. / nitrate ion / c. / nitride ionb. / nitrogen ion / d. / nitrite ion
____ 8. Aluminum is a group 3A metal. Which ion does A1 typically form?
a. / Al / c. / Alb. / Al / d. / Al
____ 9. 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
____ 10. 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
____ 11. 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
____ 12. 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
____ 13. What is the Stock name for chromic ion?
a. / chromium(I) ion / c. / chromium(III) ionb. / chromium(II) ion / d. / chromium(IV) ion
____ 14. Which of the following is NOT a cation?
a. / iron(III) ion / c. / Cab. / sulfate / d. / mercurous ion
____ 15. 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
____ 16. 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
____ 17. 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
____ 18. 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.
____ 19. Which of the following compounds contains the Mn ion?
a. / MnS / c. / MnOb. / MnBr / d. / MnO
____ 20. 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
____ 21. Which of the following formulas represents an ionic compound?
a. / CS / c. / NOb. / BaI / d. / PCl
____ 22. Which element, when combined with fluorine, would most likely form an ionic compound?
a. / lithium / c. / phosphorusb. / carbon / d. / chlorine
____ 23. 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
____ 24. 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
____ 25. 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
____ 26. What is the correct formula for potassium sulfite?
a. / KHSO / c. / KSOb. / KHSO / d. / KSO
____ 27. 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
____ 28. What type of compound is CuSO?
a. / monotomic ionic / c. / polyatomic ionicb. / polyatomic covalent / d. / binary molecular
____ 29. 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
____ 30. Sulfur hexafluoride is an example of a ____.
a. / monatomic ion / c. / binary compoundb. / polyatomic ion / d. / polyatomic compound
____ 31. 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
____ 32. What is the ending for the names of all binary compounds, both ionic and molecular?
a. / -ide / c. / -adeb. / -ite / d. / -ate
____ 33. Binary molecular compounds are made of two ____.
a. / metallic elements / c. / polyatomic ionsb. / nonmetallic elements / d. / cations
____ 34. 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
____ 35. Which of the following is a binary molecular compound?
a. / BeHCO / c. / AgIb. / PCl / d. / MgS
____ 36. 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.
____ 37. When dissolved in water, acids produce ____.
a. / negative ions / c. / hydrogen ionsb. / polyatomic ions / d. / oxide ions
____ 38. When naming acids, the prefix hydro- is used when the name of the acid anion ends in ____.
a. / -ide / c. / -ateb. / -ite / d. / -ic
____ 39. 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
____ 40. What is the name of HSO?
a. / hyposulfuric acid / c. / sulfuric acidb. / hydrosulfuric acid / d. / sulfurous acid
____ 41. 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
____ 42. What is the formula for sulfurous acid?
a. / HSO / c. / HSOb. / HSO / d. / HS
____ 43. What is the formula for phosphoric acid?
a. / HPO / c. / HPOb. / HPO / d. / HPO
____ 44. What is the formula for hydrosulfuric acid?
a. / HS / c. / HSOb. / HSO / d. / HS
____ 45. Which of the following are produced when a base is dissolved in water?
a. / hydronium ions / c. / hydrogen ionsb. / hydroxide ions / d. / ammonium ions
____ 46. In any chemical compound, the elements are always combined in the same proportion by ____.
a. / charge / c. / volumeb. / mass / d. / density
____ 47. 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
____ 48. Select the correct formula for sulfur hexafluoride.
a. / SF / c. / FSb. / FSO / d. / SF
____ 49. What is the correct name for the compound CoCl?
a. / cobalt(I) chlorate / c. / cobalt(II) chlorateb. / cobalt(I) chloride / d. / cobalt(II) chloride
____ 50. 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.
____ 51. What is the correct formula for barium chlorate?
a. / Ba(ClO) / c. / Ba(ClO)b. / Ba(ClO) / d. / BaCl
____ 52. What is the correct formula for calcium dihydrogen phosphate?
a. / CaHPO / c. / Ca(HPO)b. / CaHPO / d. / Ca(HHPO)
____ 53. What does an -ite or -ate ending in a polyatomic ion mean?
a. / Oxygen is in the formula. / c. / Nitrogen is in the formula.b. / Sulfur is in the formula. / d. / Bromine is in the formula.
____ 54. Which of the following is the correct name for NO?
a. / nitrous oxide / c. / nitrogen dioxideb. / dinitrogen pentoxide / d. / nitrate oxide
____ 55. What is the correct name for Sn(PO)?
a. / tritin diphosphate / c. / tin(III) phosphateb. / tin(II) phosphate / d. / tin(IV) phosphate
Numeric Response
56. Write the charge of an chloride ion.
57. What is the charge on the polyatomic ions nitrite and chlorite?
58. What is the charge on the cation in CuSO?
59. What is the ionic charge on the zirconium ion in the ionic compound zirconium oxide, ZrO?
60. Determine the subscript for ammonium in the chemical formula for ammonium dichromate.