Question 1

Which of the following compounds is a hydrocarbon?

Accepted Answer

A) CH3NH2 
B) CO2 
C) CH3(CH2)6CH3 
D) C2H5OH 
E) (C2H5)2O 
A) CH3NH2 
B) CO2 
C) CH3(CH2)6CH3 
D) C2H5OH 
E) (C2H5)2O

Question 2

Which of the following compounds is a carboxylic acid?

Accepted Answer

A) C2H5OC2H5 
B) CH3CH2CH2OH 
C) HCOOH 
D) CH2Cl2 
E) None is a carboxylic acid. 
A) C2H5OC2H5 
B) CH3CH2CH2OH 
C) HCOOH 
D) CH2Cl2 
E) None is a carboxylic acid.

Question 3

Which of the following has a trigonal planar electron pair geometry surrounding the central atom?
(i)NF3
(ii)BF3
(iii)PH3
(iv)IO3-

Accepted Answer

A) i only 
B) ii only 
C) i,ii,and iii 
D) i,ii,and iv 
E) i,ii,iii,and iv 
A) i only 
B) ii only 
C) i,ii,and iii 
D) i,ii,and iv 
E) i,ii,iii,and iv

Question 4

What is the electron pair geometry surrounding the carbon atom in CF4?

Accepted Answer

A) Linear 
B) Trigonal planar 
C) Angular (Bent) 
D) Tetrahedral 
E) Trigonal pyramid 
A) Linear 
B) Trigonal planar 
C) Angular (Bent) 
D) Tetrahedral 
E) Trigonal pyramid

Question 5

Which of the following is the best Lewis diagram for NO2-?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 6

Which of the following is the best Lewis diagram for H2CO3?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 7

Consider the following general wedge-and-dash diagram:   Which of the following has this structure?

Accepted Answer

A) H2O 
B) CO2 
C) BeF2 
D) SiS2 
E) CaCl2 
A) H2O 
B) CO2 
C) BeF2 
D) SiS2 
E) CaCl2

Question 8

Consider the following model.   What is the molecular geometry surrounding the central atom?

Accepted Answer

A) Angular (bent) 
B) Tetrahedral 
C) Linear 
D) Trigonal planar 
E) Trigonal pyramid 
A) Angular (bent) 
B) Tetrahedral 
C) Linear 
D) Trigonal planar 
E) Trigonal pyramid

Question 9

Which of the following is the electron pair angle in PO43-?

Accepted Answer

A) 180° 
B) 120° 
C) 109.5° 
D) 107.5° 
E) 104.5° 
A) 180° 
B) 120° 
C) 109.5° 
D) 107.5° 
E) 104.5°

Question 10

Which of the following has an the electron pair angle 120°?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 11

Which of the following has a trigonal pyramid molecular geometry?

Accepted Answer

A) Cl2O 
B) BeF2 
C) BH3 
D) NH3 
E) CF4 
A) Cl2O 
B) BeF2 
C) BH3 
D) NH3 
E) CF4

Question 12

What is the molecular geometry surrounding the nitrogen atom in NH4+?

Accepted Answer

A) Angular (bent) 
B) Tetrahedral 
C) Linear 
D) Trigonal pyramid 
E) Trigonal planar 
A) Angular (bent) 
B) Tetrahedral 
C) Linear 
D) Trigonal pyramid 
E) Trigonal planar

Question 13

Which of the following molecules is/are nonpolar?
(i)NH3
(ii)H2O
(iii)HCl
(iv)CH4
(v)CH2Cl2

Accepted Answer

A) i only 
B) iv only 
C) iv and v 
D) i,ii,and iii 
E) i,ii,iii,iv,and v 
A) i only 
B) iv only 
C) iv and v 
D) i,ii,and iii 
E) i,ii,iii,iv,and v

Question 14

Which of the following is better classified as an inorganic compound than an organic compound?

Accepted Answer

A) CH3Cl 
B) CH3OH 
C) CH2O 
D) Na2CO3 
E) C2H6 
A) CH3Cl 
B) CH3OH 
C) CH2O 
D) Na2CO3 
E) C2H6

Question 15

Which of the following molecules is/are polar?
(i)  
(ii)  
(iii)  
(iv)  
(v)

Accepted Answer

A) i only 
B) ii only 
C) iii only 
D) iv only 
E) ii and v 
A) i only 
B) ii only 
C) iii only 
D) iv only 
E) ii and v

Question 16

Which of the following is the best Lewis diagram for PCl3?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 17

Which of the following is considered to be a region of electron density for purposes of establishing the electron-pair and molecular geometries around a central atom within a molecule?
(i)Single bond
(ii)Double bond
(iii)Triple bond
(iv)Lone pair

Accepted Answer

A) i only 
B) i and iv 
C) ii and iii 
D) i,ii,and iii 
E) i,ii,iii,and iv 
A) i only 
B) i and iv 
C) ii and iii 
D) i,ii,and iii 
E) i,ii,iii,and iv

Question 18

Which of the following is the best Lewis diagram for NH2-?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 19

Which of the following is better classified as an organic compound than as an inorganic compound?

Accepted Answer

A) Ne 
B) HF 
C) H2O 
D) NH3 
E) CH4 
A) Ne 
B) HF 
C) H2O 
D) NH3 
E) CH4

Question 20

Which of the following is the best Lewis diagram for CH2O?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Exam 13: Structure and Shape

Which of the following compounds is a hydrocarbon?

Which of the following compounds is a carboxylic acid?

Which of the following has a trigonal planar electron pair geometry surrounding the central atom? (i)NF3 (ii)BF3 (iii)PH3 (iv)IO3-

What is the electron pair geometry surrounding the carbon atom in CF4?

Which of the following is the best Lewis diagram for NO2-?

Which of the following is the best Lewis diagram for H2CO3?

Consider the following general wedge-and-dash diagram: Which of the following has this structure?

Consider the following model. What is the molecular geometry surrounding the central atom?

Which of the following is the electron pair angle in PO43-?

Which of the following has an the electron pair angle 120°?

Which of the following has a trigonal pyramid molecular geometry?

What is the molecular geometry surrounding the nitrogen atom in NH4+?

Which of the following molecules is/are nonpolar? (i)NH3 (ii)H2O (iii)HCl (iv)CH4 (v)CH2Cl2

Which of the following is better classified as an inorganic compound than an organic compound?

Which of the following molecules is/are polar? (i) (ii) (iii) (iv) (v)

Which of the following is the best Lewis diagram for PCl3?

Which of the following is considered to be a region of electron density for purposes of establishing the electron-pair and molecular geometries around a central atom within a molecule? (i)Single bond (ii)Double bond (iii)Triple bond (iv)Lone pair

Which of the following is the best Lewis diagram for NH2-?

Which of the following is better classified as an organic compound than as an inorganic compound?

Which of the following is the best Lewis diagram for CH2O?

Matter and Energy

Measurement and Chemical Calculations

Introduction to Gases

Atomic Theory: the Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: the Quantum Model of the Atom

Chemical Bonding

The Ideal Gas Law and Its Applications

Gases, liquids, and Solids

Solutions

Acid-Base Proton-Transferreactions

Chemical Equilibrium

Oxidation-Reduction Redoxreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Which of the following has a trigonal planar electron pair geometry surrounding the central atom? (i)NF₃ (ii)BF₃ (iii)PH₃ (iv)IO₃^-

What is the electron pair geometry surrounding the carbon atom in CF₄?

Which of the following is the best Lewis diagram for NO₂^-?

Which of the following is the best Lewis diagram for H₂CO₃?

Which of the following is the electron pair angle in PO₄³^-?

What is the molecular geometry surrounding the nitrogen atom in NH₄⁺?

Which of the following molecules is/are nonpolar? (i)NH₃ (ii)H₂O (iii)HCl (iv)CH₄ (v)CH₂Cl₂

Which of the following is the best Lewis diagram for PCl₃?

Which of the following is the best Lewis diagram for NH₂^-?

Which of the following is the best Lewis diagram for CH₂O?