CHM 1040: Final 2/4

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kieu
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82138
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CHM 1040: Final 2/4
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2011-04-27 00:20:05
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CHM Final
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CHM 1040: Final 2/4
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  1. Ammonium nitrate can be synthesized by the reaction of ammonia and nitric acid. What is the chemical equation for this reaction?

    A)
    B)
    C)
    D) NH3 + HNO3 --? NH4NO3
    D) NH3 + HNO3 --? NH4NO3
    (this multiple choice question has been scrambled)
  2. Copper dissolves in nitric acid solution to give aqueous
    copper sulfate, nitrogen monoxide gas, and water. Indicate the
    (unbalanced) chemical equation for this reaction.

    A) Cu (s) + HCl (aq) --? CuSO4 (aq) + SO2 (g)
    B) Cu (s) + HNO3 (aq) --? Cu(NO3)2(aq) + NO (g) + H2O (l)
    C) Cu (s) + H2S(aq) --? CuSO4 (aq) + SO2(g) + H2O (l)
    D) Cu (s) + SO2(g) + H2O(l) --? CuSO4 (aq) + H2SO4(aq)
    B) Cu (s) + HNO3 (aq) --? Cu(NO3)2(aq) + NO (g) + H2O (l)
    (this multiple choice question has been scrambled)
  3. Ionic compounds form

    A) mostly between metals.
    B) mostly between metals and non-metals.
    C) between any two metalloids.
    D) mostly between non-metals.
    B) mostly between metals and non-metals.

    The metal gives electrons to a non-metal
    (this multiple choice question has been scrambled)
  4. In a chemical reaction:

    A) reactants are converted to products.
    B) the total number of atoms may change.
    C) gases are usually formed.
    D) heat is always evolved.
    E) products form reactants.
    A) reactants are converted to products.
    (this multiple choice question has been scrambled)
  5. Evidence of chemical reactions is always obvious.

    A) True
    B) False
    B) False

    An observer may be looking for the wrong thing, or in the wrong place (though our examples will generally be obvious)
  6. Dalton's
    atomic theory was eventually successful because it _____ observations
    that were made later, and _______ previous theories.

    A) predicted ... destroyed
    B) experimented ... integrated
    C) predicted ... explained
    D) integrated ... ignored
    C) predicted ... explained
    (this multiple choice question has been scrambled)
  7. What are the coefficients when the following reaction is properly balanced?___O2 (g) + ___CH4 (g) --? ___CO2 (g) + ___H2O (g)

    A) 4 1 1 2
    B) 2 1 1 2
    C) 1 1 1 2
    D) 3/2 1 1 2
    E) 3 2 2 3
    B) 2 1 1 2
    (this multiple choice question has been scrambled)
  8. Sodium-23

    A) has a mass number of 34.
    B) is chemically identical to neon-23.
    C) is chemically identical to sodium-22.
    D) has an atomic number of 22.
    C) is chemically identical to sodium-22.

    As long as Z is the same, they are the same chemical element
    (this multiple choice question has been scrambled)
  9. Give the formula of the compound formed from aluminum and oxygen.

    A) AlO
    B) AlO2
    C) Al2O3
    D) Al3O2
    E) Al2O
    C) Al2O3
    (this multiple choice question has been scrambled)
  10. What is the name of the compound PF5?
    A)
    B) phosphorus pentafluoride
    C)
    D) monophosphate
    E) perphosphorus
    B) phosphorus pentafluoride
    (this multiple choice question has been scrambled)
  11. What is the proper name of the compound formed between aluminum and oxygen?

    A) aluminum dioxide
    B) dialuminum trioxide
    C) aluminum oxide
    D) dialuminum oxide
    E) trialuminum oxide
    C) aluminum oxide
    (this multiple choice question has been scrambled)
  12. Which of the following is not a part of Dalton's atomic theory?

    A) All atoms of a given element are identical.
    B) Atoms of elements combine to form compounds.
    C) A given compound always has the same relative numbers and types of atoms.
    D) Atoms are indivisible in chemical reactions.
    E) Natural materials are combinations of elements.
    E) Natural materials are combinations of elements.
    (this multiple choice question has been scrambled)
  13. After a chemical reaction is properly balanced, the coefficients should be ————.

    A) fractions
    B) the same
    C) all less than 5
    D) different from each other
    E) reduced to the smallest set of integers and must give the same number of atoms of each element on both sides of the equation
    E) reduced to the smallest set of integers and must give the same number of atoms of each element on both sides of the equation
    (this multiple choice question has been scrambled)
  14. Which of the following is the formula for periodate?

    A) IO-
    B) I-
    C) IO3-
    D) IO2-
    E) IO4-
    E) IO4-
    (this multiple choice question has been scrambled)
  15. What is the correct name for the compound Na2O?

    A) disodium oxide
    B) sodium oxide
    C) persodium dioxide
    D) sodium peroxide
    E) persodium oxide
    D) sodium peroxide
    (this multiple choice question has been scrambled)
  16. In a chemical reaction,

    A) reactants and products must be in the same phase.
    B) heat is produced
    C) the atoms that are created are called the "reactants."
    D)
    E) the reactants form the products of the reaction.
    E) the reactants form the products of the reaction.
    (this multiple choice question has been scrambled)
  17. Identify the false statement regarding the periodic table:

    A) The periodic table is predictive.
    B) The periodic table arranges families of elements horizontally.
    C) The periodic table arranges elements in families.
    D) The periodic table was first developed by Mendeleev.
    E) The periodic table is arranged according to Z.
    B) The periodic table arranges families of elements horizontally.

    Families of elements are arranged vertically.
    (this multiple choice question has been scrambled)
  18. Hydrogen peroxide liquid decomposes to form water and oxygen gas. Identify the (unbalanced) chemical reaction.

    A) H2O --? H2O + O2
    B) H2O2 --? H2O + O2
    C) HO --? H2O + O2
    D) H2O2 --? H2O + O
    B) H2O2 --? H2O + O2
    (this multiple choice question has been scrambled)
  19. Which set of statements regarding the nuclear atom is correct?

    A) mn ? me, charges: p-, e+, n0
    B) mp ? mn, charges: p-, e+, n0
    C) mp ? mn, charges: p+, e-, n0
    D) mp ? me, charges: p+, e-, n0
    C) mp ? mn, charges: p+, e-, n0
    (this multiple choice question has been scrambled)
  20. For a given compound, the subscripts in the chemical formula may not change.

    A) True
    B) False
    A) True

    Changing the subscripts changes the compound identity. The law of constant composition tells us this
  21. Which of the following is sulfurous acid?

    A) HNO3
    B) H2SO3
    C) H2SO4
    D) H2S
    E) H2S2O3
    B) H2SO3
  22. The largest single category or grouping of elements in the periodic table is the:

    A) halogens.
    B) non-metals.
    C) noble gases.
    D) metals.
    E) alkaline earth metals.
    D) metals.
    (this multiple choice question has been scrambled)
  23. A typical oxoacid contains oxygen, hydrogen and a(n):

    A) metalloid.
    B) non-metal.
    C) metal.
    D) polyatomic ion.
    B) non-metal.
    (this multiple choice question has been scrambled)
  24. Give the formula of the compound formed from potassium and iodine.

    A) K2I
    B) PI
    C) KI
    D) PIO
    E) PI2
    C) KI
    (this multiple choice question has been scrambled)
  25. When magnesium is dissolved in nitric acid, hydrogen gas is
    evolved, and aqueous magnesium nitrate is formed. Indicate the
    (unbalanced) chemical reaction.

    A) Si(s) + HNO3 (aq) --? H2(g) + SiNO3 (aq)
    B) Mg (s) + HNO3 (aq) --? H2(s) + Mg(NO3)2 (s)
    C) Si(s) + HNO3 (aq) --? H2(g) + Mg(NO3)2 (aq)
    D) Mg (s) + HNO3 (aq) --? H2(g) + Mg(NO3)2 (aq)
    D) Mg (s) + HNO3 (aq) --? H2(g) + Mg(NO3)2 (aq)
    (this multiple choice question has been scrambled)
  26. Which of the following is the formula for acetic acid?

    A) HCO
    B) H2CO3
    C) HCN
    D) HC2H3O2
    E) H2AlO3
    D) HC2H3O2
    (this multiple choice question has been scrambled)
  27. Trace elements

    A) are present in the body in tiny amounts.
    B) are dangerous.
    C) are used only in medicine.
    D) have very small masses.
    E) can be detected with Geiger counters.
    A) are present in the body in tiny amounts.
    (this multiple choice question has been scrambled)
  28. Give the proper name for HI.

    A) hydrogen iodide
    B) iodoic acid
    C) hydroiodic acid
    D) hydrochloric acid
    E) monohydride iodide
    C) hydroiodic acid
    (this multiple choice question has been scrambled)
  29. Ions

    A) are not stable.
    B) only form from metals.
    C) cause fires when created.
    D) are formed through the gain and loss of electrons.
    D) are formed through the gain and loss of electrons.
    (this multiple choice question has been scrambled)
  30. Give the proper formula for potassium sulfate.

    A) PSO3
    B) K2SO
    C)
    D) K2SO3
    E) P2SO4
    B) K2SO
    (this multiple choice question has been scrambled)
  31. Which of the following is not a physical state that may be specified in a chemical equation?

    A) (vap)
    B) (aq)
    C)
    D)
    E)
    A) (vap)
    (this multiple choice question has been scrambled)
  32. A compound that has four atoms of hydrogen, two of oxygen, and two of carbon might be

    A)
    B)
    C) HC2H3O2
    D)
    C) HC2H3O2
    (this multiple choice question has been scrambled)
  33. Balance the following equation representing the Hall process &; an important synthesis of aluminum.___Al2O3 (s) + ___C(s) --? ____Al(s) + ___CO2 (g)

    A) 2 3 4 3
    B)
    C)
    D)
    A) 2 3 4 3
    (this multiple choice question has been scrambled)
  34. What are the coefficients when the following reaction is properly balanced?___silicon tetraiodide + ___magnesium —? ___silicon + ___magnesium iodide

    A) 1 2 1 2
    B) 2 4 4 2
    C) 2 2 2 2
    D)
    E)
    A) 1 2 1 2
    (this multiple choice question has been scrambled)
  35. What is the chemical formula of dichloropentoxide?

    A)
    B)
    C)
    D) Cl2O5

    D) Cl2O5
    (this multiple choice question has been scrambled)
  36. What is the correct formula for the compound copper(II) chloride?

    A) CuCl2
    B)
    C)
    D)
    A) CuCl2
    (this multiple choice question has been scrambled)
  37. Which statement regarding isotopic symbols is correct?

    A) The atomic number is larger than Z.
    B) The number of protons is equal to A.
    C) The mass number is less than Z.
    D) The mass number is larger than Z.
    E) The atomic number is A.
    D) The mass number is larger than Z.

    A equals Z + the number of neutrons.
    (this multiple choice question has been scrambled)
  38. Give the formula for the compound rubidium hydroxide.

    A)
    B) RbOH
    C)
    D)
    E)
    B) RbOH
    (this multiple choice question has been scrambled)
  39. What is the proper name for the compound Co2O3?

    A)
    B)
    C)
    D)
    B)
    (this multiple choice question has been scrambled)
  40. Which of the following is not evidence of a chemical reaction?

    A) heat production
    B)
    C) color change
    D)
    E) boiling water
    E) boiling water

    (Although the heat used to boil the water may be produced by a chemical reaction.)
    (this multiple choice question has been scrambled)
  41. What are the coefficients when the following reaction is
    properly balanced?___Iron(II) oxide + ___carbon —? ___iron + ___carbon
    dioxide gas

    A) 4 1 1 2
    B) 2 2 1 3
    C) 4 2 4 2
    D) 2 1 2 1
    E) 1/2 1 1 1
    D) 2 1 2 1
    (this multiple choice question has been scrambled)
  42. Ionic compounds

    A) will not dissolve in water.
    B) may have any net charge.
    C) may be represented by different formulas.
    D) form to give an overall neutral charge.
    D) form to give an overall neutral charge.

    The overall charge on an ionic compound must be zero
    (this multiple choice question has been scrambled)
  43. Titanium (IV) bromide reacts with hydrogen gas to produce titanium metal and hydrogen bromide gas. Which is the correct balanced equation for this reaction?

    A) TiBr4 (aq) + 2H2 (g) --? Ti (s) + 4HBr (g)
    B)
    C)
    D)
    A) TiBr4 (aq) + 2H2 (g) --? Ti (s) + 4HBr (g)
    (this multiple choice question has been scrambled)
  44. The elemental symbol for potassium is

    A) F
    B) Ka
    C) K
    D) S
    E) P
    C) K
    (this multiple choice question has been scrambled)
  45. What is wrong with the compound KrO2?

    A) Should be Kr2O
    B)
    C) Should be KrO4
    D) Krypton does not form compounds.
    E) Should be KrO
    D) Krypton does not form compounds.

    Noble gases are mostly unreactive
    (this multiple choice question has been scrambled)
  46. Ernest Rutherford

    A) opposed atomic theory.
    B) proved the existence of the electron.
    C) was responsible for the plum-pudding model.
    D) theorized the nuclear atom.
    E) worked with Albert Einstein.
    D) theorized the nuclear atom.
    (this multiple choice question has been scrambled)
  47. Atoms are mostly empty space.

    A)
    B)
    A)

    The mass is centered at the very small nucleus. The electrons take up most of the space.
  48. What is the formula for the compound sulfur dioxide?

    A) SO2
    B)
    C)
    D)
    E)
    A) SO2
  49. Solid sodium metal reacts explosively with chlorine gas yielding sodium chloride powder. Which is the correct balanced equation for this reaction?

    A)
    B)
    C)
    D) 2Na(s) + Cl2(g) --? 2NaCl(s)
    D) 2Na(s) + Cl2(g) --? 2NaCl(s)
    (this multiple choice question has been scrambled)
  50. What are the coefficients when the following reaction is
    properly balanced?___ sodium carbonate +___sulfur + ___sulfur dioxide
    gas —? ___carbon dioxide gas + ___sodium thiosulfate

    A) 1 1 1 1 1
    B) 2 1 1 1 1
    C) 1 1 2 1 1
    D) 1 2 1 2 2
    A) 1 1 1 1 1
    (this multiple choice question has been scrambled)
  51. Ethanol (C2H5OH) burns in oxygen to form carbon dioxide gas and water vapor. Identify the (unbalanced) chemical equation.

    A)
    B)
    C) C2H5OH + O2 --? CO2 + H2O
    D)
    C) C2H5OH + O2 --? CO2 + H2O
    (this multiple choice question has been scrambled)
  52. The nuclear atom

    A) failed to predict observed behavior.
    B) has electrons centered at the nucleus.
    C) describes the nuclear chain reaction.
    D) consists of a small, dense nucleus and electrons.
    E) consists of a small, dense nucleus and protons.
    D) consists of a small, dense nucleus and electrons.

    The nucleus contains most of the mass
    (this multiple choice question has been scrambled)
  53. Which family in the periodic table is found naturally as diatomic molecules?

    A) The halogens.
    B)
    C) The noble gases.
    D) The transition metals.
    A) The halogens.
    (this multiple choice question has been scrambled)
  54. Which is a correct chemical formula?

    A)
    B)
    C) H2S
    D)
    C) H2S
    (this multiple choice question has been scrambled)
  55. What are the coefficients when the following reaction is properly balanced?___Al (s) + ___H2SO4(aq) --? ___Al2(SO4)3 (aq) + ___H2(g)

    A) 2 2 3 2
    B) 1 3 1 3
    C) 2 3 1 3
    D) 4 6 2 6
    E) 1 1 1 1
    C) 2 3 1 3
    (this multiple choice question has been scrambled)
  56. Which of the following is nitrite?

    A) NO2-
    B)
    C)
    D)
    E)
    A) NO2-
    (this multiple choice question has been scrambled)
  57. Give the formula for the compound chromium(V) nitrate.

    A) CrO3)5
    B)
    C)
    D)
    E)
    A) CrO3)5
    (this multiple choice question has been scrambled)
  58. Names from old languages determine some of the elemental symbols.

    A)
    B)
    A)
  59. What are the coefficients when the following reaction is properly balanced?___NO (g) + ___Cl2 (g) --? ___NOCl (g)

    A) 2 1 2
    B)
    C) 1 2 3
    D) 1 1 2
    A) 2 1 2
    (this multiple choice question has been scrambled)

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