Link full download test bank for introductory chemistry essentials 5th edition by tro

Diff: 1 Var: 1 Page Ref: 10.2 Learning Outcome: 10.1 Global Outcome: G1 6 Lewis structures only use the valence electrons in determining the bonding.. Answer: TRUE Diff: 1 Var: 1 Page Re

Test Bank for Introductory Chemistry Essentials

5th Edition by TroSample

Diff: 1 Var: 1 Page Ref: 10.2

Learning Outcome: 10.1 Global

Outcome: G1

6) Lewis structures only use the valence electrons in determining the bonding Answer: TRUE

Diff: 1 Var: 1 Page Ref: 10.2

Learning Outcome: 10.1 Global

8) A correct Lewis structure for an atom of carbon would have eight dots

surrounding the symbol of the element

Diff: 1 Var: 1 Page Ref: 10.3

Learning Outcome: 10.1 Global

Diff: 1 Var: 1 Page Ref: 10.3

Learning Outcome: 10.2 Global

Diff: 1 Var: 1 Page Ref: 10.4

Learning Outcome: 10.3 Global

18) The triple bond present in diatomic nitrogen, N2, is what makes this molecule

19) When calculating the number of electrons for the Lewis structure of a

polyatomic ion, subtract one electron for each negative charge

21) The correct Lewis structure for CO2 shows that the carbon atom has two sets

of lone pair electrons

Answer: FALSE

Diff: 1 Var: 1 Page Ref: 10.5

Learning Outcome: 10.3

Global Outcome: G2

22) When calculating the number of electrons for the Lewis structure of a

polyatomic ion, you must add one electron for each negative charge and subtract one electron for each positive charge

Answer: TRUE

Diff: 1 Var: 1 Page Ref: 10.5

Learning Outcome: 10.3 Global

26) Resonance structures are the best representation we can draw but do not

accurately reflect the true structure

Answer: TRUE

Diff: 1 Var: 1 Page Ref: 10.6

Learning Outcome: 10.4 Global

30) It is important to identify lone pairs around a central atom because they do not repel other electron groups

34) When you have 4 electron groups and none of them are lone pairs, the

molecular geometry is trigonal pyramidal

Answer: FALSE

Diff: 1 Var: 1 Page Ref: 10.7

Learning Outcome: 10.5 Global

Diff: 1 Var: 1 Page Ref: 10.8

Learning Outcome: 10.6 Global

Outcome: G1

10.2 Multiple Choice Questions

1) Which of the following statements about Lewis structures is FALSE? A)

An octet is when an atom has 8 valence electrons

B) A duet is a stable electron configuration for helium

C) An ionic bond occurs when electrons are transferred

D) A covalent bond occurs when electrons are shared

E) All of the above statements are true

3) Which Lewis structure below correctly represents the compound formed

between magnesium and sulfur?

A) Mg⁺ [: :]⁻

E) none of the above

8) When a nonmetal bonds with a nonmetal: A)

a molecular compound forms

B) a covalent bond is involved

C) electrons are shared

D) all of the above are true

E) none of the above

E) none of the above Answer: D

Diff: 2 Var: 1 Page Ref: 10.4

Diff: 2 Var: 1 Page Ref: 10.4

Learning Outcome: 10.3 Global

Outcome: G2

13) How many bonding electrons are in the Lewis structure of N2?

Diff: 1 Var: 1 Page Ref: 10.4

Learning Outcome: 10.3 Global

Outcome: G2

15) The Lewis structure for carbon monoxide is This structures shows: A)

4 lone pairs and 1 bonding pair

B) 4 lone pairs and 3 bonding pairs

C) 2 lone pairs and 3 bonding pairs

D) 2 lone pairs and 1 bonding pair

E) none of the above

A) single < double < triple

B) double < single < triple

C) single < triple < double

D) triple < double < single

E) none of the above

Answer: A

Diff: 1 Var: 1 Page Ref: 10.4

Learning Outcome: 10.3 Global

19) The central atom in the chlorate anion, ClO3- is surrounded by: A)

two bonding and two unshared pairs of electrons

B) one bonding and three unshared pairs of electrons

C) three bonding and one unshared pair of electrons

D) two double bonds and no unshared pairs of electrons

E) none of the above

Answer: C

Diff: 2 Var: 1 Page Ref: 10.5

Learning Outcome: 10.3

Global Outcome: G2

20) The central atom in the chlorite anion, ClO2- is surrounded by: A) one bonding and three unshared pairs of electrons

B) two bonding and two unshared pairs of electrons

C) two bonding and one unshared pair of electrons

D) two double bonds and no unshared pairs of electrons

E) none of the above

B) SO32- only

C) SO42- only

D) all of these show resonance

E) none of these show resonance

Answer: A

Diff: 3 Var: 1 Page Ref: 10.6

Learning Outcome: 10.4

Global Outcome: G2

30) Which one of the following molecules is NOT capable of having resonance structures?

B) 109.5°

C) 120°

D) 180°

E) not enough information Answer: B

Diff: 2 Var: 1 Page Ref: 10.7

Learning Outcome: 10.5

Global Outcome: G1

34) Which of the following is considered a single electron group?

A) a lone pair of electrons

E) not enough information Answer: C

Diff: 2 Var: 1 Page Ref: 10.7

E) not enough information Answer: D

Diff: 2 Var: 1 Page Ref: 10.7

E) not enough information Answer: A

Diff: 2 Var: 1 Page Ref: 10.7

E) not enough information Answer: C

Diff: 2 Var: 1 Page Ref: 10.7

E) none of the above

Answer: C

Diff: 2 Var: 1 Page Ref: 10.7

Learning Outcome: 10.5 Global

Learning Outcome: 10.6

Global Outcome: G1

53) The elements with the highest electronegativity values tend to be found in the: A) upper right-side of the periodic table

B) lower right-side of the periodic table

C) upper left-side of the periodic table

D) lower left-side of the periodic table

E) center of the periodic table

Answer: A

Diff: 1 Var: 1 Page Ref: 10.8

Learning Outcome: 10.6

Global Outcome: G1

54) Which term matches the definition: The ability of an element to attract

electrons within a covalent bond?

D) all of the compounds

E) none of the compounds Answer: C

Diff: 2 Var: 1 Page Ref: 10.8

Learning Outcome: 10.6

Global Outcome: G2

56) Which molecule listed below has a polar covalent bond? A) NaCl

B) H2O

C) H2

D) all of the compounds

E) none of the compounds Answer: B

Diff: 2 Var: 1 Page Ref: 10.8

Learning Outcome: 10.6 Global

D) all of the compounds

E) none of the compounds

D) all of the compounds

E) none of the compounds

D) all of the compounds

E) none of the compounds Answer: D

Diff: 2 Var: 1 Page Ref: 10.8

D) all of the compounds

E) none of the compounds

D) all of the compounds

E) none of the compounds Answer: A

Diff: 2 Var: 1 Page Ref: 10.8

D) all of the compounds

E) none of the compounds

Answer: B

Diff: 2 Var: 1 Page Ref: 10.8

Learning Outcome: 10.6

Global Outcome: G2

63) Which of the following statements is TRUE for the covalent molecule HCl? A) Chlorine is more electronegative and the shared electron pair is likely to be found

on the hydrogen atom

B) Chlorine is more electronegative and the shared electron pair is likely to be found on the chlorine atom

C) Hydrogen is more electronegative and the shared electron pair is likely to be found on the hydrogen atom

D) Hydrogen is more electronegative and the shared electron pair is likely to be found on the chlorine atom

E) none of the above

Answer: B

Diff: 2 Var: 1 Page Ref: 10.8

Learning Outcome: 10.6 Global

Outcome: G2

64) Which of the following statements about the water molecule is TRUE? A)

A water molecule has two dipole moments and they cancel each other

B) A water molecule is symmetrical and therefore is nonpolar

C) A water molecule is asymmetric and therefore is polar

D) The electronegativities of hydrogen and oxygen are equal and therefore a water molecule is nonpolar

E) none of the above

D) All of the above statements are true

E) None of the above are true

Answer: D

Diff: 2 Var: 1 Page Ref: 10.8

B) NO is a pure covalent compound

C) NO is a polar covalent compound

D) There is not enough enough information to determine the nature of NO E) None of the above statements is true

A) ionic

B) pure covalent

C) polar covalent

D) not enough information

E) none of the above

Answer: A

Diff: 2 Var: 1 Page Ref: 10.8

Learning Outcome: 10.6

Global Outcome: G2

68) Consider the following electronegativity values:

Which molecule below would you expect to have the more polar bond?

How does soap work?

A) Soap works by breaking grease molecules into smaller molecules that