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Fundamentals of General, Organic, and Biological Chemistry, 7e (McMurry)

Chapter 3   Ionic Compounds

 

1) A positively charged particle formed by loss of one or more electrons from an atom is called a(an)

1.    A) anion.

2.    B) cation.

3.    C) isotope.

4.    D) nucleus.

5.    E) proton.

Answer:  B

Diff: 1

Section:  3.1

 

2) A small negatively charged particle formed when an atom gains one or more electrons is called a(an)

1.    A) anion.

2.    B) cation.

3.    C) isotope.

4.    D) nucleus.

5.    E) proton.

Answer:  A

Diff: 1

Section:  3.1

 

3) When an atom donates an electron, that electron

1.    A) is lost for all time.

2.    B) is acquired by another atom which becomes an anion.

3.    C) is acquired by another atom which becomes a cation.

4.    D) neutralizes a proton to form a neutron.

5.    E) pairs with another electron to form a covalent bond.

Answer:  B

Diff: 2

Section:  3.1

 

4) Main group elements that are metals usually ________ one or more electrons to form ________, which have a ________ charge.

1.    A) lose; anions; negative

2.    B) lose; cations; negative

3.    C) lose; cations; positive

4.    D) gain; cations; positive

5.    E) gain; anions; negative

Answer:  C

Diff: 2

Section:  3.1

 

5) Main group elements that are non-metals usually ________ one or more electrons to form ________, which have a ________ charge.

1.    A) lose; anions; negative

2.    B) lose; cations; negative

3.    C) lose; cations; positive

4.    D) gain; cations; positive

5.    E) gain; anions; negative

Answer:  E

Diff: 2

Section:  3.1

 

6) One characteristic of a cation is that

1.    A) it has more protons than electrons.

2.    B) it has equal numbers of protons and electrons.

3.    C) it has more electrons than protons.

4.    D) the number of neutrons is related to the number of electrons.

5.    E) the relationship between protons and electrons varies with the cation in question.

Answer:  A

Diff: 3

Section:  3.1

 

7) The property that describes the ease with which an atom gives up an electron to form a positive ion is

1.    A) atomic number.

2.    B) electron affinity.

3.    C) electronegativity.

4.    D) ionization energy.

5.    E) none of the above

Answer:  D

Diff: 1

Section:  3.2

 

8) The property defined as the energy released on adding an electron to an isolated gas phase atom is

1.    A) atomic number.

2.    B) electron affinity.

3.    C) electronegativity.

4.    D) ionization energy.

5.    E) none of the above

Answer:  B

Diff: 1

Section:  3.2

 

9) Which of the following has the largest ionization energy?

1.    A) Ne

2.    B) Br

3.    C) P

4.    D) Al

5.    E) Ca

Answer:  A

Diff: 2

Section:  3.2

 

10) The property defined as the energy required to remove one electron from an atom in the gaseous state is

1.    A) atomic number.

2.    B) electron affinity.

3.    C) ionization energy.

4.    D) electronegativity.

5.    E) none of the above

Answer:  C

Diff: 2

Section:  3.2

 

11) An element belonging to the halogen family would be expected to have a ________ ionization energy and a ________ electron affinity.

1.    A) large; large

2.    B) large; small

3.    C) small; small

4.    D) small; large

5.    E) none of the above

Answer:  A

Diff: 3

Section:  3.2

 

12) An element belonging to the alkaline earth family would be expected to have a ________ ionization energy and a ________ electron affinity.

1.    A) large; large

2.    B) large; small

3.    C) small; small

4.    D) small; large

5.    E) none of the above

Answer:  C

Diff: 3

Section:  3.2

 

13) The term which best describes the crystalline substance that results when a large number of metal atoms transfers electrons to a large number of non-metal atoms is

1.    A) covalent compound.

2.    B) molecule.

3.    C) ionic solid.

4.    D) cation.

5.    E) anion.

Answer:  C

Diff: 2

Section:  3.3

 

14) The statement that best describes the formation of an ionic compound is:

1.    A) Electrons are transferred from a metal to a non-metal, and the resulting charged particles form a crystalline network.

2.    B) Electrons are transferred from a non-metal to a metal, and the resulting charged particles form a crystalline network.

3.    C) Electrons are shared between two atoms and discrete molecules are formed.

4.    D) Electrons move freely among a network of nuclei in fixed positions.

5.    E) Each atom achieves an octet using electrons provided from an external electrical supply.

Answer:  A

Diff: 2

Section:  3.3

 

15) Which one of the compounds below is most likely to be ionic?

1.    A) SrBr2

2.    B) NO2

3.    C) CBr4

4.    D) H2O

Answer:  A

Diff: 2

Section:  3.3

 

16) Which of the following pairs will form ionic bonds with one another?

1.    A) N, C

2.    B) Na, Ca

3.    C) Cs, Br

4.    D) S, Cl

Answer:  C

Diff: 2

Section:  3.3

 

17) All of the following are properties typical of ionic compounds except

1.    A) exist as crystalline solids at room temperature.

2.    B) conduct electrical current if dissolved in water.

3.    C) form distinct molecules by interaction of specific particles.

4.    D) have very high melting points and boiling points.

5.    E) shatter when crystals are struck.

Answer:  C

Diff: 2

Section:  3.4

 

18) Which of the following electron configurations is most stable?

1.    A) 1s2 2s2

2.    B) 1s2 2s2 2p2

3.    C) 1s2 2s2 2p3

4.    D) 1s2 2s2 2p4

5.    E) 1s2 2s2 2p6

Answer:  E

Diff: 2

Section:  3.5

 

19) What is the most likely charge on an ion formed by an element with a valence electron configuration of ns2np4?

1.    A) 2-

2.    B) 1-

3.    C) 2+

4.    D) 4+

5.    E) 6+

Answer:  A

Diff: 2

Section:  3.5

 

20) What is the most likely charge on an ion formed by an element with a valence electron configuration of ns1?

1.    A) 7-

2.    B) 1-

3.    C) 0

4.    D) 1+

5.    E) 7+

Answer:  D

Diff: 2

Section:  3.5

 

21) What is the most likely charge on an ion formed by an element with a valence electron configuration of ns2np5?

1.    A) 5-

2.    B) 1-

3.    C) 1+

4.    D) 2+

5.    E) 5+

Answer:  B

Diff: 2

Section:  3.5

 

22) What is the most likely charge on an ion formed by an element with a valence electron configuration of ns2np1?

1.    A) 3-

2.    B) 1-

3.    C) 1+

4.    D) 3+

5.    E) 5+

Answer:  D

Diff: 2

Section:  3.5

 

23) What is the valence shell electron configuration of the ion formed from an atom of the halogen family?

1.    A) ns2

2.    B) ns2 np2

3.    C) ns2 np4

4.    D) ns2 np6

5.    E) ns2 np8

Answer:  D

Diff: 3

Section:  3.5

 

24) Which of the following ions does not have the same electron configuration as the noble gas neon?

1.    A) O-2

2.    B) F-

3.    C) Al+3

4.    D) S-2

5.    E) Mg+2

Answer:  D

Diff: 2

Section:  3.5

 

25) An atom with 3 valence electrons will most likely

1.    A) lose three electrons.

2.    B) gain three electrons.

3.    C) gain five electrons.

4.    D) gain one electron.

5.    E) lose one electron.

Answer:  A

Diff: 3

Section:  3.5

 

26) How are noble gases related to the octet rule?

Answer:  Noble gases, except helium, illustrate the stability of elements with a full outer shell (an octet). These elements are unreactive because their valence shell is filled. Helium is also grouped with these elements because it is unreactive due to its filled 1s shell.

Diff: 1

Section:  3.5

 

27) Briefly explain how the octet rule determines the charge, both sign and magnitude, of an ion.

Answer:  The octet rule states that main group elements will do chemistry in order to have eight electrons in their outer shell. If an atom has one or two electrons past an octet, it will lose the appropriate number to have a full outer shell, resulting in a positively charged ion. If an atom is one or two electrons away from having an octet, it will gain the appropriate number, resulting in a negatively charged ion.

Diff: 2

Section:  3.5

 

28) Predict the charge that would be found on a carbide ion and on a nitride ion. Explain why these ions are seldom found in compounds.

Answer:  The names of both ions end in “ide,” suggesting that they have gained electrons to form anions. In order to achieve an octet, carbon would have to gain four electrons, forming C4-. Likewise for nitride, the ion would be N3-. Both of these ions are less common because it is extremely difficult to add additional electrons to an ion that already has a -2 charge.

Diff: 3

Section:  3.5

29) Which element will form an ion with the greatest positive charge?

1.    A) Al

2.    B) Na

3.    C) Mg

4.    D) Sr

5.    E) P

Answer:  A

Diff: 3

Section:  3.6

 

 

30)  In order to form an octet, an atom of selenium will

1.    A) lose 6 electrons.

2.    B) gain 6 electrons.

3.    C) lose 2 electrons.

4.    D) gain 2 electrons.

Answer:  D

Diff: 2

Section:  3.6

 

31) The charge on a sulfide ion is ________.

1.    A) 3+

2.    B) 2+

3.    C) 0

4.    D) 2-

5.    E) 3-

Answer:  D

Diff: 1

Section:  3.6

 

32) Which of the following elements is most likely to form an ion with a +2 charge?

1.    A) Mg

2.    B) Si

3.    C) S

4.    D) K

5.    E) Br

Answer:  A

Diff: 1

Section:  3.6

33) Which pair of elements is most likely to form an ionic compound if allowed to react together?

1.    A) Al and Si

2.    B) Fe and Ca

3.    C) C and F

4.    D) K and Br

5.    E) H and N

Answer:  D

Diff: 2

Section:  3.6

 

 

34) What fourth period element is represented by the dot structure shown?

  X:

1.    A) K

2.    B) Ca

3.    C) V

4.    D) As

5.    E) Ti

Answer:  B

Diff: 2

Section:  3.6

 

35) What fourth period element is represented by the dot structure shown?

 

1.    A) K

2.    B) Ca

3.    C) Mn

4.    D) Br

5.    E) Co

Answer:  D

Diff: 2

Section:  3.6

 

36) Which of the following elements is most likely to form an ion with a -2 charge?

1.    A) Mg

2.    B) Si

3.    C) S

4.    D) K

5.    E) Ti

Answer:  C

Diff: 1

Section:  3.6

37) Which of the following elements is most likely to form an ion with a -1 charge?

1.    A) Mg

2.    B) Si

3.    C) S

4.    D) Cl

5.    E) Sc

Answer:  D

Diff: 1

Section:  3.6

 

 

38) The name of Cl- is

1.    A) chlorine ion.

2.    B) chloride ion.

3.    C) chlorate ion.

4.    D) chlorite ion.

5.    E) diatomic chlorine.

Answer:  B

Diff: 1

Section:  3.7

 

39) The name of S2- is

1.    A) sulfur.

2.    B) sulfate ion.

3.    C) sulfite ion.

4.    D) sulfide ion.

5.    E) sulfurous ion.

Answer:  D

Diff: 1

Section:  3.7

 

40) The name of Cu2+ is ________ ion or ________ ion.

1.    A) copper; cupric

2.    B) copper(i); cupric

3.    C) copper(II); cupric

4.    D) copper(I); cuprous

5.    E) copper(II); cuprous

Answer:  C

Diff: 2

Section:  3.7

41) The correct Roman numeral for the chromium ion in the compound CrCl3 is

1.    A) I

2.    B) II

3.    C) III

4.    D) IV

Answer:  C

Diff: 2

Section:  3.7

 

 

42) The name of Sn2+ is ________ ion or ________ ion.

1.    A) tin; stannous

2.    B) tin(IV); stannic

3.    C) tin(II); stannic

4.    D) tin(IV); stannous

5.    E) tin(II); stannous

Answer:  E

Diff: 2

Section:  3.7

 

43) Which of the following formulas in incorrect for a cobalt(III) compound?

1.    A) CoCO3

2.    B) CoCl3

3.    C) Co2O3

4.    D) CoPO4

Answer:  A

Diff: 2

Section:  3.7

 

44) What is the formula of the ammonium ion?

1.    A) Am-

2.    B) Am+

3.    C) NH4+

4.    D) NH4+

5.    E) N4H+

Answer:  C

Diff: 1

Section:  3.8

45) What is the formula of the carbonate ion?

1.    A) CO2 3-

2.    B) CO3 2-

3.    C) C2O4 2-

4.    D) C2O4 -1

5.    E) C2H3O2 -1

Answer:  B

Diff: 1

Section:  3.8

 

 

46) What is the formula of the nitrate ion?

1.    A) NO32-

2.    B) NO 3-

3.    C) NO2-1

4.    D) NO3 -1

5.    E) none of the above

Answer:  D

Diff: 1

Section:  3.8

 

47) What is the formula of the sulfite ion?

1.    A) SO3 2-

2.    B) SO4 2-

3.    C) HSO4 2-

4.    D) S 2-

5.    E) none of the above

Answer:  A

Diff: 1

Section:  3.8

 

48) The formula PO4 3- means that this ion is composed of

1.    A) one atom of phosphorus, one atom of oxygen, and three extra electrons.

2.    B) four atoms of phosphorus, four atoms or oxygen, and three extra electrons.

3.    C) one atom of phosphorus,four atoms of oxygen, and three electrons have been lost.

4.    D) one atom of phosphorus, four atoms of oxygen, and three extra electrons.

5.    E) four atoms of phosphorus, four atoms of oxygen, and three electrons have been lost.

Answer:  D

Diff: 2

Section:  3.8

49) The permanganate ion is composed of

1.    A) one atom of magnesium, four atoms of oxygen, and one extra electron.

2.    B) one atom of manganese, four atoms of oxygen, and one extra electron.

3.    C) four atoms of magnesium, four atoms of oxygen, and one extra electron.

4.    D) four atoms of manganese, four atoms of oxygen, and one extra electron.

5.    E) one manganese(II) ion, four oxide ions, and two extra electrons.

Answer:  B

Diff: 2

Section:  3.8

 

 

50) The HCO3 -1 ion is called ________.

1.    A) hydrogen carbonate

2.    B) hydrogen carbide

3.    C) carbide

4.    D) carbonate

5.    E) carbonite

Answer:  A

Diff: 3

Section:  3.8

 

51) Which is the correct formula for the ionic compound containing iron(III) ions and oxide ions?

1.    A) FeO

2.    B) FeO2

3.    C) Fe2O2

4.    D) Fe2O3

5.    E) Fe3O2

Answer:  D

Diff: 2

Section:  3.9

 

52) What is the formula for the ionic compound formed between lithium and bromide?

1.    A) LiB

2.    B) LiBr

3.    C) Li2Br

4.    D) LiBr2

5.    E) Li+Br-

Answer:  B

Diff: 2

Section:  3.9

53) What is the formula for the ionic compound formed between calcium and sulfur?

1.    A) CaS

2.    B) CaSi

3.    C) Ca2S

4.    D) CaS2

5.    E) CaSi2

Answer:  A

Diff: 2

Section:  3.9

 

 

54) What is the formula of a compound formed by the ions M2+ and X3-?

1.    A) M2X3

2.    B) M3X2

3.    C) MX3

4.    D) M2X

5.    E) none of the above

Answer:  B

Diff: 2

Section:  3.9

 

55) What is the formula of a compound formed by the ions M+ and X3-?

1.    A) MX3

2.    B) M3X

3.    C) M3X3

4.    D) M2X6

5.    E) none of the above

Answer:  B

Diff: 2

Section:  3.9

 

56) The main group element E reacts with chlorine to form an ionic compound with the formula ECl2. The element E is a member of what group in the Periodic Table?

1.    A) 1A

2.    B) 2A

3.    C) 6A

4.    D) 7A

5.    E) none of the above

Answer:  B

Diff: 3

Section:  3.9

57) If an element G could react with sulfur to form an ionic compound with formula GS2, the charge on the ion formed by G would be ________.

1.    A) 4-

2.    B) 2-

3.    C) 1+

4.    D) 2+

5.    E) 4+

Answer:  E

Diff: 3

Section:  3.9

 

 

58) A formula unit of the ionic compound copper(II) carbonate consists of ________ copper(II) ions and ________ carbonate ions.

1.    A) one; one

2.    B) one; two

3.    C) two; one

4.    D) two; two

5.    E) some other combination of ions

Answer:  A

Diff: 2

Section:  3.9, 3.10

 

59) A formula unit of ammonium sulfate consists of ________ ammonium ions and ________ sulfate ions.

1.    A) one; two

2.    B) two; one

3.    C) two; three

4.    D) three; two

5.    E) four; four

Answer:  B

Diff: 2

Section:  3.9, 3.10

 

60) The formula Ca(NO3)2 tells us that one formula unit of this compound is composed of ________ calcium atoms, ________ nitrogen atoms, and ________ oxygen atoms.

1.    A) one; two; six

2.    B) two; two; six

3.    C) one; two; five

4.    D) one; one; five

5.    E) one; one; six

Answer:  A

Diff: 2

Section:  3.9, 3.10

61) The formula for potassium dichromate is ________.

1.    A) KCr2O7

2.    B) K2Cr2O7

3.    C) K2CrO4

4.    D) PCr2 O7

5.    E) PCrO4

Answer:  B

Diff: 1

Section:  3.9, 3.10

 

 

62) The formula for the compound chromium(II) nitrate is ________.

1.    A) C2NO3

2.    B) Cr2NO3

3.    C) CrNO3

4.    D) Cr(NO3)2

5.    E) CrNO2

Answer:  D

Diff: 2

Section:  3.10

 

63) The formula (NH4)3PO4 indicates that one formula unit of this compound is composed of

1.    A) three atoms of nitrogen, twelve atoms of hydrogen, one atom of phosphorus, four atoms of oxygen, and six extra electrons.

2.    B) three atoms of nitrogen, twelve atoms of hydrogen, four atoms of phosphorus, and four atoms of oxygen.

3.    C) one atom of nitrogen, twelve atoms of hydrogen, one atom of phosphorus, and four atoms of oxygen.

4.    D) three atoms of nitrogen, seven atoms of hydrogen, one atom of phosphorus, and four atoms of oxygen.

5.    E) three atoms of nitrogen, twelve atoms of hydrogen, one atom of phosphorus, and four atoms of oxygen.

Answer:  E

Diff: 3

Section:  3.9, 3.10

 

64) What is the formula for calcium phosphate?

1.    A) Ca3(PO4)2

2.    B) Ca2PO4

3.    C) Ca3PO4

4.    D) Ca2(PO3)3

5.    E) Ca4(PO3)3

Answer:  A

Diff: 3

Section:  3.10

65) What is the name of Mg3(PO4)2?

1.    A) trimagnesium diphosphate

2.    B) magnesium diphosphate

3.    C) trimagnesium phosphate

4.    D) magnesium phosphate

5.    E) magnesium phosphorus oxide

Answer:  D

Diff: 1

Section:  3.10

 

 

66) What is the name of AlCl3?

1.    A) aluminum chloride

2.    B) aluminum(III) chloride

3.    C) aluminum carbide

4.    D) aluminum trichloride

5.    E) aluminum tricarbide

Answer:  A

Diff: 1

Section:  3.10

 

67) What is the name of SnCl2?

1.    A) ditin chloride

2.    B) tin dichloride

3.    C) tin(II) chloride

4.    D) tin chloride

5.    E) strontium chloride

Answer:  C

Diff: 1

Section:  3.10

 

68) Iron pyrite (fool’s gold) is iron(II) sulfide.  What is its formula?

1.    A) FeS

2.    B) FeSO3

3.    C) FeSO4

4.    D) Fe2S3

5.    E) Fe2(SO3)3

Answer:  A

Diff: 2

Section:  3.10

69) What is the name of K2S?

1.    A) dipotassium sulfide

2.    B) potassium disulfide

3.    C) potassium(II) sulfide

4.    D) potassium sulfide

5.    E) none of the above

Answer:  D

Diff: 1

Section:  3.10

 

 

70) The name of the compound with formula NaMnO4 is

1.    A) sodium magnesium oxide.

2.    B) sodium magnesium tetraoxide.

3.    C) sodium manganate.

4.    D) sodium permanganate.

5.    E) sodium manganese tetraoxide.

Answer:  D

Diff: 1

Section:  3.10

 

71) The formula for ammonium hydroxide is ________.

1.    A) OHNH4

2.    B) NH4NO3

3.    C) NH4O

4.    D) NH4OH

5.    E) Al(OH)3

Answer:  D

Diff: 2

Section:  3.10

 

72) Which of the following formulas represents a compound that is a base?

1.    A) CaSO4

2.    B) NH4Cl

3.    C) Mg(OH)2

4.    D) H2

5.    E) none of the above

Answer:  C

Diff: 2

Section:  3.11

73) One definition of an acid is a substance that provides which ion in water solution?

1.    A) Na+

2.    B) H+

3.    C) OH-

4.    D) NH4+

5.    E) none of the above

Answer:  B

Diff: 2

Section:  3.11

 

 

74)  One definition of a base is a substance that provides which ion in water solution?

1.    A) Na+

2.    B) H+

3.    C) OH-

4.    D) H3O+

5.    E) NH4+

Answer:  C

Diff: 2

Section:  3.11

 

75) Which of the following formulas represents a compound that is an acid?

1.    A) CaSO4

2.    B) NH4Cl

3.    C) Mg(OH)2

4.    D) H2O

5.    E) H3PO4

Answer:  E

Diff: 2

Section:  3.11

 

Match the following.

 

76) chromium(II) hydroxide

Diff: 1

Section:  3.10

A)

 

B)

S

 

NCC

 

77) calcium sulfate

Diff: 1

Section:  3.10

C)

 

D)

(NH4)2CO3

 

CaS

 

78) aluminum phosphate

Diff: 1

Section:  3.10

E)

 

F)

NaN

 

HCl

79) potassium sulfide

Diff: 1

Section:  3.10

G)

 

H)

Fe(OH

 

NaCC

 

80) sodium acetate

Diff: 1

Section:  3.10

I)

 

J)

AlP

 

S

 

81) ammonium acetate

Diff: 1

1.    K) Cr

 

Section:  3.10  L) (C

 

82) ammonium carbonate

Diff: 1

Section:  3.10

 

83) aluminum carbonate

Diff: 1

Section:  3.10

 

84) potassium sulfite

Diff: 1

Section:  3.10

 

85) hydrogen chloride

Diff: 1

Section:  3.10

 

86) sodium nitrite

Diff: 1

Section:  3.10

 

87) iron(II) hydroxide

Diff: 1

Section:  3.10

 

Answers: 76) K   77) D   78) I   79) A   80) H   81) B

82) C   83) L   84) J   85) F   86) E   87) G

 

 

Fundamentals of General, Organic, and Biological Chemistry, 7e (McMurry)

Chapter 4   Molecular Compounds

 

1) A chemical bond formed between two identical atoms is a(an) ________ bond.

1.    A) atomic

2.    B) covalent

3.    C) hydrogen

4.    D) ionic

5.    E) molecular

Answer:  B

Diff: 1

Section:  4.1

 

2) A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________.

1.    A) double; covalent

2.    B) double; ionic

3.    C) single; covalent

4.    D) single; ionic

5.    E) triple; covalent

Answer:  A

Diff: 2

Section:  4.1

 

3) Which representation of a hydrogen molecule is not correct?

1.    A) H=H

2.    B) H2

3.    C) H:H

4.    D) HH

5.    E) none of the above

Answer:  A

Diff: 1

Section:  4.2

 

4) Which representation of a methane molecule is not correct? (A methane molecule is composed of one carbon atom and four hydrogen atoms.)

1.    A) CH4

2.    B)

 

1.    C)

 

1.    D)

 

1.    E) none of the above

Answer:  D

Diff: 1

Section:  4.2

 

5) Which element is most likely to form three covalent bonds?

1.    A) C

2.    B) Si

3.    C) P

4.    D) S

5.    E) Se

Answer:  C

Diff: 1

Section:  4.2

 

6) In a covalent compound the bond length can be defined as

1.    A) the distance between any two pairs of electrons.

2.    B) the distance between the two largest atoms.

3.    C) the distance between two nuclei when the repulsion is greatest.

4.    D) the distance between two nuclei when the attraction is greatest.

5.    E) the distance between two nuclei when repulsion and attraction are balanced.

Answer:  E

Diff: 2

Section:  4.2

 

7) Which group contains only elements which normally exist as diatomic molecules?

1.    A) nitrogen; sulfur, bromine

2.    B) helium; neon, argon

3.    C) nitrogen; oxygen, fluorine

4.    D) hydrogen; lithium, sodium

5.    E) oxygen; phosphorus, germanium

Answer:  C

Diff: 2

Section:  4.2

 

8) A chemical bond formed when two atoms share one pair of electrons is a ________ bond; it is best described as ________.

1.    A) double; covalent

2.    B) double; ionic

3.    C) single; covalent

4.    D) single; ionic

5.    E) triple; covalent

Answer:  C

Diff: 2

Section:  4.2

 

9) For the dot structure shown the most likely elements are X =________ and Y = ________.

 

1.    A) carbon; hydrogen

2.    B) carbon; fluorine

3.    C) carbon; oxygen

4.    D) hydrogen; carbon

5.    E) fluorine; carbon

Answer:  B

Diff: 3

Section:  4.2

 

10) When two atoms share one or more pairs of electrons, a covalent bond is formed.

Answer:  TRUE

Diff: 1

Section:  4.2

 

11) When a non-metal atom bonds with another non-metal atom, an ionic bond is formed.

Answer:  FALSE

Diff: 1

Section:  4.2

 

12) Which point identifies the bond length between the two atoms of the diatomic molecule whose potential energy is shown on the graph?

Answer:  C

Diff: 1

Section:  4.2

 

13) Which point identifies the maximum repulsion between the two atoms of the diatomic molecule whose potential energy is shown in the graph?

Answer:  A

Diff: 1

Section:  4.2

 

14) Which element is most likely to be “X” in the diatomic molecule shown?

 

1.    A) nitrogen

2.    B) oxygen

3.    C) fluorine

4.    D) hydrogen

5.    E) helium

Answer:  B

Diff: 2

Section:  4.3

 

15) Which group in the Periodic Table is most likely to contain the element X in the molecule whose dot structure is shown?

 

1.    A) 2A

2.    B) 3A

3.    C) 4A

4.    D) 5A

5.    E) 6A

Answer:  E

Diff: 2

Section:  4.3

 

 

 

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