General, Organic, And Biological Chemistry 3rd Edition By janice Smith – Test Bank

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General, Organic, And Biological Chemistry 3rd Edition By janice Smith – Test Bank

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Chapter 02

Atoms and the Periodic Table

 

 

Multiple Choice Questions

1. Which element is a nonmetal?
   A.K
   B. Co
   C. Br
   D. Al

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

2. Which element is a metal?
   A.Li
   B. Si
   C. Cl
   D. Ar
   E.

More than one of the elements is a metal.

 

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

3. Which element is a metalloid?
   A.B
   B. C
   C. Ar
   D. Al

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

What is the mass number of the isotope with the symbol ?

35. 17
    B. 18
    C. 35.45
    D. 37

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Topic: Atoms and the Periodic Table (Components of Matter)

What is the atomic number of the isotope with the symbol ?

35. 17
    B. 18
    C. 35.45
    D. 37

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

How many protons are in the isotope with the symbol ?

35. 17
    B. 18
    C. 35.45
    D. 37

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Topic: Atoms and the Periodic Table (Components of Matter)

7. Silicon has three naturally occurring isotopes: Si-28, Si-29 and Si-30. If the average atomic mass of silicon is 28.09, which isotope has the highest isotopic abundance?
   A.Si-28
   B. Si-29
   C. Si-30
   D. All isotopes have the same isotopic abundance.

 

Bloom’s Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Topic: Atoms and the Periodic Table (Components of Matter)

8. The active ingredient in the drug Fosamax is a compound with the chemical formula C₄H₁₈NNaO₁₀P₂. Which statement concerning the chemical formula of this compound is false?
   A.Atoms of six different elements make up this compound.
   B. Carbon, hydrogen, nitrogen, sodium, oxygen, and potassium atoms are present in this compound.
   C. The ratio of carbon atoms to oxygen atoms is 4:10.
   D. There is only one atom of nitrogen present in this compound.

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

9. Which element is a transition metal in period 4?
   A.K
   B. Hf
   C. Sn
   D. Sc

 

Bloom’s Level: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

10. Which element is a noble gas?
    A.H
    B. Ne
    C. Pr
    D. Ra
    E. More than one of the elements listed is a noble gas.

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

11. Which element is not an alkali metal?
    A.Li
    B. K
    C. Rb
    D. H
    E. All of these elements are alkali metals.

 

Bloom’s Level: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

12. Which element is not an alkali metal?
    A.Li
    B. Kr
    C. Rb
    D. Na
    E. All of these elements are alkali metals.

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

13. The chemical reactivity of an element is determined by which of the following?
    A.the number of protons in an atom of the element
    B. the number of valence electrons in an atom of the element
    C. the number of neutrons in an atom of the element
    D. the number of protons and neutrons in an atom of the element

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

14. The element symbol for manganese is
    A.M
    B. Ma
    C. Mg
    D. Mn

 

Bloom’s Level: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

15. The element symbol for sulfur is
    A.S
    B. Su
    C. Sf
    D. Sl

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

16. Which statement is not part of the modern description of the electronic structure of an atom?
    A.Electrons occupy discrete energy levels.
    B. Electrons move freely in space.
    C. The energy of electrons is quantized.
    D. The energy of electrons is restricted to specific values.

 

Bloom’s Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Electronic Structure
Topic: Atoms and the Periodic Table (Components of Matter)

17. What is the maximum number of electrons that can occupy the third (n=3) shell?
    A.2
    B. 3
    C. 6
    D. 8
    E. 18

 

Bloom’s Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Electronic Configuration
Subtopic: Electronic Structure
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

18. Which of the following properly represents the order of orbital filling based on the relative energy of the orbitals?
    A.1s,2s,2p,3s,3p,3d,4s,4p
    B. 1s,2s,3s,4s,2p,3p,4p,3d
    C.

1s,2s,2p,3s,3p,4s,3d,4p

1s,2s,2p,3s,3d,3p,4s,4p

 

 

Bloom’s Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Electronic Configuration
Subtopic: Electronic Structure
Topic: Atoms and the Periodic Table (Components of Matter)

19. Which atom has the largest atomic radius?
    A.K
    B. Ga
    C. Br
    D. Rb

 

Bloom’s Level: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Trends in the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

20. Which atom has the smallest atomic radius?
    A.K
    B. Ga
    C. Br
    D. Rb

 

Bloom’s Level: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Trends in the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

21. Which element has the smallest ionization energy?
    A.K
    B. Ga
    C. Br
    D. Rb

 

Bloom’s Level: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Trends in the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

How many protons are in the isotope  ?

1. 238
   B. 146
   C. 92
   D. 330

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

How many neutrons are in the isotope ?

1. 238
   B. 146
   C. 92
   D. 330

 

Bloom’s Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

How many electrons are in the isotope ?

1. 238
   B. 146
   C. 92
   D. 330

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

25. Which isotope is not possible?
    A.
    B.
    C.
    D.
    E.

More than one of the isotopes is not possible.

 

 

Bloom’s Level: 2. Understand
Difficulty: Hard
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Topic: Atoms and the Periodic Table (Components of Matter)

26. An atom of the isotope chlorine-37 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron)
    A.18 p, 37 n, 18 e
    B. 17 p, 20 n, 17 e
    C. 17 p, 20 n, 18 e
    D. 37 p, 37 n, 17 e
    E. 37 p, 20 n, 37 e

 

Bloom’s Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

27. The elements in a column of the periodic table are collectively referred to as
    A.metals
    B. a period
    C. a group
    D. a series
    E. metalloids

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

28. Which element is most likely to be a good conductor of electricity?
    A.Ar
    B. N
    C. F
    D. Ni
    E. O

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

29. Which element is chemically similar to lithium?
    A.sulfur
    B. magnesium
    C. iron
    D. lanthanum
    E. potassium

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

30. Which element is chemically similar to chlorine?
    A.sulfur
    B. calcium
    C. oxygen
    D. bromine
    E. argon

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

31. Which element is an s block element?
    A.S
    B. Ar
    C. He
    D. La
    E. None of these elements is an s block element.

 

Bloom’s Level: 3. Apply
Difficulty: Hard
Gradable: automatic
Subtopic: Electronic Configuration
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

32. Which element is a d block element?
    A.S
    B. Ar
    C. Ag
    D. As
    E. None of these elements is a d block element.

 

Bloom’s Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Subtopic: Electronic Configuration
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

33. The proper electron-dot symbol for aluminum is
    A.
    B.
    C.
    D.

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Valence Electrons
Topic: Atoms and the Periodic Table (Components of Matter)

The electron configuration of chlorine is 1s²2s²2p⁶3s²3p⁵. Which statement about chlorine is incorrect?

1. chlorine has five valence electrons
   B. chlorine’s valence shell is the third shell
   C. chlorine has five electrons in the 3p subshell
   D. chlorine has 17 total electrons

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Electronic Configuration
Topic: Atoms and the Periodic Table (Components of Matter)

35. What is the symbol for the isotope with A = 31 and Z = 15?
    A.
    B.
    C.
    D.

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

In the diagram below, which highlighted element is an f block element?

1. A
   B. B
   C. C
   D. D
   E. E

 

Bloom’s Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Electronic Configuration
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

37. Which statement describing atoms is false?
    A.The number of protons in an atom is referred to as the atomic number of the atom.
    B. The total number of protons, neutrons, and electrons in an atom is referred to as the mass number of the atom.
    C. Protons and neutrons are located in the nucleus of an atom.
    D. Electrons are located in the space outside the nucleus called the electron cloud.

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

38. Antimony is a metalloid containing 51 protons that is alloyed with lead and used in car batteries. What is the element symbol for antimony?
    A.A
    B. An
    C. At
    D. Sb
    E. Cr

 

Bloom’s Level: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

39. Which statement concerning the elements fluorine, chlorine, bromine, and iodine is incorrect?
    A.These elements are all halogens.
    B. These elements all have the same valence shell.
    C. These elements are all nonmetals.
    D. These elements all have the same number of valence electrons.

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

40. A sulfur atom has a larger atomic radius than an oxygen atom. Which statement best explains why?
    A.Sulfur contains more electrons than oxygen does.
    B. Sulfur contains more protons than oxygen does.
    C. The valence shell of sulfur is farther away from the nucleus than the valence shell of oxygen is.
    D. The larger number of protons in an oxygen atom pulls its electrons closer to the nucleus than a sulfur atom.

 

Bloom’s Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Trends in the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

41. Zirconium (Zr) is an element classified as a metal. Which property cannot be assumed based on its classification as a metal?
    A.Zr has a relatively high density
    B. Zr is a trace element in the body
    C. Zr is a good conductor of electricity
    D. Zr is a shiny solid

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

True / False Questions

42. Protons and electrons reside in the nucleus of an atom.
    FALSE

 

Bloom’s Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

43. Electrons are negatively charged and have the smallest mass of the three subatomic particles.
    TRUE

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Atomic Theories
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

44. The nucleus contains most of the mass of an atom and is positively charged.

    TRUE

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Atomic Theories
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

45. All atoms of the same element contain the same number of protons.
    TRUE

 

Bloom’s Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Atomic Theories
Subtopic: Structure of the Atom
Topic: Atoms and the Periodic Table (Components of Matter)

46. An alloy is a mixture of two or more elements that has metallic properties.
    TRUE

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

47. Fl is the element symbol for fluorine.

    FALSE

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

48. The element symbol S represents sodium.
    FALSE

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

49. Hydrogen is located in group 1A but it is not considered an alkali metal.
    TRUE

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

50. The element symbol for iron is Fe.

    TRUE

 

Bloom’s Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

51. Helium is an s block element.
    TRUE

 

Bloom’s Level: 2. Understand
Difficulty: Hard
Gradable: automatic
Subtopic: Electronic Configuration
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

 

52. Nonmetals have a shiny appearance, and they are generally poor conductors of heat and electricity.
    FALSE

 

Bloom’s Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

53. All elements have at least two naturally occurring isotopes.

    FALSE

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Atomic Number, Mass Number, Atomic Symbol and Isotopes
Subtopic: Atomic Theories
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

54. Oxygen, carbon, hydrogen, and nitrogen are called the building-block elements because they make up the majority of the mass of the human body.
    TRUE

 

Bloom’s Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Elements and the Periodic Table
Topic: Atoms and the Periodic Table (Components of Matter)

 

Chapter 04

Covalent Compounds

 

 

Multiple Choice Questions

1. Covalent bonds result from the _____ electrons between two atoms.
   A.transfer of
   B. equal sharing of
   C. unequal sharing of
   D.

transfer of, equal sharing of, and unequal sharing of are correct

equal sharing of and unequal sharing of are correct

 

 

Blooms Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Covalent Bonding
Topic: Chemical Bonding

2. A diatomic molecule contains
   I. atoms of two different elements bonded together with a covalent bond.
   II. two atoms of the same element bonded together with a covalent bond.
   III. two lone pairs of electrons.
   A.I only
   B. II only
   C. III only
   D. I or II only
   E. I and III only

 

Blooms Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Covalent Bonding
Topic: Chemical Bonding

 

 

3. What is another name for an unshared pair of electrons in a covalent compound?
   A.lone pair of electrons
   B. nonbonded electron pair
   C. bonding pair of electrons
   D. lone pair of electrons or nonbonded electron pair

 

Blooms Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Covalent Bonding
Subtopic: Lewis Structures
Topic: Chemical Bonding

4. Which of the statements concerning chemical bonds is false?
   A.The sharing of electrons between two nonmetal atoms results in a covalent bond.
   B. The attraction between oppositely charged ions results in an ionic bond.
   C. The term nonpolar is used to describe a covalent bond in which electrons are not shared equally.
   D. A bond dipole is the separation of charge that results when atoms sharing electrons have different electronegativities.

 

Blooms Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Bond Polarity
Subtopic: Covalent Bonding
Subtopic: Polarity of Molecules
Topic: Chemical Bonding

5. How many covalent bonds are generally formed by atoms with five valence electrons?
   A.1
   B. 2
   C. 3
   D. 4
   E. 5

 

Blooms Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Covalent Bonding
Topic: Chemical Bonding

 

 

6. How many lone pairs of electrons are present in the Lewis structure of ammonia, NH₃?
   A.0
   B. 1
   C. 2
   D. 3
   E. 4

 

Blooms Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Topic: Chemical Bonding

How many nonbonded electron pairs are in the Lewis structure below?

1. 2
   B. 4
   C. 6
   D. 8
   E. 16

 

Blooms Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Topic: Chemical Bonding

 

 

8. What is the Lewis structure for chloroethylene (C₂H₃Cl)?
   A.

 

 

 

 

 

 

Blooms Level: 3. Apply
Difficulty: Hard
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Subtopic: Octet Rule
Topic: Chemical Bonding

 

 

9. How many valence electrons are in a molecule of formaldehyde (CH₂O)?
   A.16
   B. 12
   C. 10
   D. 8
   E. 0

 

Blooms Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Subtopic: Octet Rule
Topic: Chemical Bonding

Predict the bond angles around the carbon atom in the structure of carbonic acid shown below. Don’t forget to draw in lone pairs where needed to give octets.

 

109. 180°
     B. 120°
     C. 109.5°
     D. 90°
     E. 60°

 

Blooms Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Subtopic: Octet Rule
Subtopic: Valence-Shell Electron-Pair Repulsion Theory (VSEPR) and Molecular Shape
Topic: Chemical Bonding

 

 

11. What is the molecular shape around the phosphorus atom in PH₃?
    A.linear
    B. bent
    C. trigonal planar
    D. tetrahedral
    E. trigonal pyramidal

 

Blooms Level: 3. Apply
Difficulty: Hard
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Subtopic: Octet Rule
Subtopic: Valence-Shell Electron-Pair Repulsion Theory (VSEPR) and Molecular Shape
Topic: Chemical Bonding

12. What are the bond angles in a tetrahedral geometry?
    A.180°
    B. 120°
    C. 109.5°
    D. 90°
    E. 60°

 

Blooms Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Valence-Shell Electron-Pair Repulsion Theory (VSEPR) and Molecular Shape
Topic: Chemical Bonding

 

 

Aspartic acid is an amino acid used to synthesize proteins. How many lone pairs of electrons need to be added to complete the aspartic acid structure shown below?

 

1. 4
   B. 6
   C. 8
   D. 9
   E. 11

 

Blooms Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Subtopic: Octet Rule
Topic: Chemical Bonding

14. Which of the following molecule(s) is(are) polar?
    A.CO₂
    B. CH₄
    C. CBr₄
    D. CHBr₃
    E.

More than one of the molecules are polar.

 

 

Blooms Level: 3. Apply
Difficulty: Hard
Gradable: automatic
Subtopic: Bond Polarity
Subtopic: Electronegativity
Subtopic: Polarity of Molecules
Topic: Chemical Bonding

 

 

15. Rank the atoms Br, Cl, and K in order of increasing electronegativity.
    A.K < Br < Cl
    B. Cl < Br < K
    C. Br < Cl < K
    D. K < Cl < Br
    E. Cl < K < Br

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Electronegativity
Topic: Chemical Bonding

16. Rank the atoms Br, Cl, and F in order of increasing electronegativity.
    A.F < Br < Cl
    B. Cl < Br < F
    C. Br < Cl < F
    D. F < Cl < Br
    E. Cl < F < Br

 

Blooms Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Subtopic: Electronegativity
Topic: Chemical Bonding

17. Which atom has the lowest electronegativity?
    A.Al
    B. S
    C. Se
    D. Rb
    E. F

 

Blooms Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Subtopic: Electronegativity
Topic: Chemical Bonding

 

 

18. Which bond is the most polar?
    A.C–N
    B. C–O
    C. C–C
    D. C–Cl
    E. C–F

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Bond Polarity
Subtopic: Electronegativity
Topic: Chemical Bonding

19. Which bond is the least polar?
    A.C–N
    B. C–O
    C. C–C
    D. C–Cl
    E. C–F

 

Blooms Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Subtopic: Bond Polarity
Subtopic: Electronegativity
Topic: Chemical Bonding

 

 

Aspartic acid is an amino acid used to synthesize proteins. How many polar bonds are in the aspartic acid structure shown below?

 

1. 4
   B. 6
   C. 9
   D. 12
   E. 15

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Bond Polarity
Subtopic: Electronegativity
Subtopic: Polarity of Molecules
Topic: Chemical Bonding

21. What is the correct chemical formula of selenium dioxide?
    A.SO₂
    B. SeO₂
    C. Se₂O
    D. OS₂

 

Blooms Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Subtopic: Covalent Bonding
Topic: Chemical Bonding

 

 

22. Which bond has the polarity incorrectly labeled?
    A.

^d+ H–Cl ^d–

^d+ O–C ^d–

^d+ Cl–F ^d–

^d– Cl–Br ^d+

^d– F–O ^d+

 

 

Blooms Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Subtopic: Bond Polarity
Subtopic: Electronegativity
Topic: Chemical Bonding

23. What is the chemical formula for dinitrogen tetroxide?
    A.N₄O₂
    B. O₄N₂
    C. N₂O₄
    D. O₂N₄
    E. NO₂

 

Blooms Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Subtopic: Covalent Bonding
Topic: Chemical Bonding

 

 

24. Which is the correct Lewis structure for OBr^–?
    A.

 

 

 

 

 

 

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Topic: Chemical Bonding

 

 

Estimate the bond angles around the sulfur atom in the structure shown below.

 

109. 90°
     B. 109.5°
     C. 120°
     D. 180°

 

Blooms Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Subtopic: Valence-Shell Electron-Pair Repulsion Theory (VSEPR) and Molecular Shape
Topic: Chemical Bonding

What is the molecular shape around the nitrogen atom in the structure shown below?

1. linear
   B. bent
   C. trigonal planar
   D. tetrahedral
   E. trigonal pyramidal

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Valence-Shell Electron-Pair Repulsion Theory (VSEPR) and Molecular Shape
Topic: Chemical Bonding

 

 

What is the molecular shape around the oxygen atom in the structure shown below?

1. linear
   B. bent
   C. trigonal planar
   D. tetrahedral
   E. trigonal pyramidal

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Valence-Shell Electron-Pair Repulsion Theory (VSEPR) and Molecular Shape
Topic: Chemical Bonding

28. Which element may have more than eight valence electrons around it when present in a covalent compound?
    A.C
    B. B
    C. N
    D. P
    E. O

 

Blooms Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Exceptions to the Octet Rule
Subtopic: Octet Rule
Topic: Chemical Bonding

 

 

29. Which molecule or ion has only two resonance structures to describe its bonding?
    A.CO₃^2–
    B. NO₃^–
    C. HCO₃^1–
    D. SO₃

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Lewis Dot Symbols
Subtopic: Lewis Structures
Subtopic: Resonance
Topic: Chemical Bonding

30. Which of the following is classified as a group in the valence shell electron pair repulsion (VSEPR) theory?
    A.an atom
    B. a lone pair of electrons
    C. a valence electron
    D. either an atom or a valence electron
    E. either an atom or a lone pair of electrons

 

Blooms Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Valence-Shell Electron-Pair Repulsion Theory (VSEPR) and Molecular Shape
Topic: Chemical Bonding

31. Which molecule’s Lewis structure contains an atom that violates the octet rule?
    A.H₂O
    B. BeH₂
    C. PCl₃
    D. H₂Se

 

Blooms Level: 2. Understand
Difficulty: Hard
Gradable: automatic
Subtopic: Exceptions to the Octet Rule
Subtopic: Lewis Structures
Subtopic: Octet Rule
Topic: Chemical Bonding

 

 

32. Which compound has the greatest number of valence electrons?
    A.H₂S
    B. CH₄
    C. NH₃
    D. H₂O
    E.

All of the molecules have the same number of valence electrons.

 

 

Blooms Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Lewis Structures
Topic: Chemical Bonding

Which atom(s) in the structure below has(have) a partial negative charge (d^–)?

1. carbon
   B. fluorine
   C. hydrogen
   D. nitrogen
   E. nitrogen and fluorine

 

Blooms Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Subtopic: Bond Polarity
Subtopic: Electronegativity
Topic: Chemical Bonding

 

 

How many lone pairs of electrons need to be added to the Lewis structure of carbonic acid shown below?

1. 0
   B. 3
   C. 4
   D. 6
   E. 7

 

Blooms Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Lewis Structures
Topic: Chemical Bonding

What is the total number of bonding electrons in the structure below?

1. 5
   B. 10
   C. 20
   D. 30

 

Blooms Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Lewis Structures
Topic: Chemical Bonding

 

 

36. Which Lewis structure is incorrect?
    A.

 

 

 

 

 

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Lewis Structures
Topic: Chemical Bonding

 

 

The Lewis structure shown below is not a valid Lewis structure. What statement best describes the error in the structure?

1. The nitrogen atoms violate the octet rule.
   B. The chlorine atoms violate the octet rule.
   C. The structure contains an incorrect number of valence electrons.
   D. Chlorine atoms and nitrogen atoms do not typically form bonds with each other.

 

Blooms Level: 4. Analyze
Difficulty: Hard
Gradable: automatic
Subtopic: Lewis Structures
Topic: Chemical Bonding

38. Which of the statements concerning compounds is incorrect?
    A.Compounds are formed when atoms of two or more different elements are chemically bonded.
    B. Ionic compounds are composed of cations and anions.
    C. Covalent compounds are composed of metals and nonmetals.
    D. Covalent compounds are composed of individual molecules.

 

Blooms Level: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Covalent Bonding
Topic: Chemical Bonding