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

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 3

Which of the following is the best Lewis diagram for HCO2-?

Accepted Answer

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

Question 4

Which of the following has a tetrahedral electron pair geometry surrounding the central atom?
i.PH3
ii.BH3
iii.BeH2
iv.OF2

Accepted Answer

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

Question 5

Which of the following best describes hydrocarbons?

Accepted Answer

A) Alkanes in which a hydrogen atom is replaced by a hydroxyl group 
B) Binary compounds of carbon and hydrogen 
C) Organic compounds containing water and carbon 
D) Covalently bonded carbon compounds which have intermolecular force attractions to hydrogen compounds 
E) Compounds which are formed by the reaction of a naturally occurring carbon-containing substance and water 
A) Alkanes in which a hydrogen atom is replaced by a hydroxyl group 
B) Binary compounds of carbon and hydrogen 
C) Organic compounds containing water and carbon 
D) Covalently bonded carbon compounds which have intermolecular force attractions to hydrogen compounds 
E) Compounds which are formed by the reaction of a naturally occurring carbon-containing substance and water

Question 6

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

Accepted Answer

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

Question 7

Which of the following molecular geometries yields molecules which must be nonpolar?

Accepted Answer

A) Linear 
B) Tetrahedral 
C) Trigonal planar 
D) All yield molecules which must be nonpolar 
E) None yields molecules which must be nonpolar 
A) Linear 
B) Tetrahedral 
C) Trigonal planar 
D) All yield molecules which must be nonpolar 
E) None yields molecules which must be nonpolar

Question 8

Which of the following molecules is/are polar?

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 9

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 10

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

Accepted Answer

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

Question 11

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 12

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 13

Which of the following best describes a polar molecule?

Accepted Answer

A) One with atoms having the same electronegativities 
B) One with asymmetrical distribution of charge 
C) A molecule without charge 
D) One with a tetrahedral molecular geometry 
E) One that has two or more hydrogen atoms 
A) One with atoms having the same electronegativities 
B) One with asymmetrical distribution of charge 
C) A molecule without charge 
D) One with a tetrahedral molecular geometry 
E) One that has two or more hydrogen atoms

Question 14

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

Accepted Answer

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

Question 15

A molecule consists of a second period central atom with three other atoms singly bonded to it.There is one lone pair of electrons on the central atom,and the other atoms have lone pairs.What is the molecular geometry around the central atom?

Accepted Answer

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

Question 16

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 17

Which of the following compounds is not a hydrocarbon?

Accepted Answer

A) CH2O 
B) CH4 
C) C6H6 
D) CH3(CH2)8CH3 
E) C5H10 
A) CH2O 
B) CH4 
C) C6H6 
D) CH3(CH2)8CH3 
E) C5H10

Question 18

Which of the following compounds is an alcohol?

Accepted Answer

A) CH3CH3 
B) CH3OCH2CH2CH3 
C) CH3COOH 
D) HOCH2CH2OH 
E) None is an alcohol. 
A) CH3CH3 
B) CH3OCH2CH2CH3 
C) CH3COOH 
D) HOCH2CH2OH 
E) None is an alcohol.

Question 19

Consider the following general wedge-and-dash diagram:   Which of the following molecules could this diagram represent?

Accepted Answer

A) NH3 
B) PCl3 
C) NF3 
D) BH3 
E) All of the above could be represented by the diagram. 
A) NH3 
B) PCl3 
C) NF3 
D) BH3 
E) All of the above could be represented by the diagram.

Question 20

Which of the following compounds is an ether?

Accepted Answer

A) C6H12 
B) CH3OH 
C) CH3CH2COOH 
D) CH3CH2CH3 
E) None is an ether. 
A) C6H12 
B) CH3OH 
C) CH3CH2COOH 
D) CH3CH2CH3 
E) None is an ether.

Exam 13: Structure and Shape

Which of the following compounds is a hydrocarbon?

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

Which of the following is the best Lewis diagram for HCO2-?

Which of the following has a tetrahedral electron pair geometry surrounding the central atom? i.PH3 ii.BH3 iii.BeH2 iv.OF2

Which of the following best describes hydrocarbons?

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

Which of the following molecular geometries yields molecules which must be nonpolar?

Which of the following molecules is/are polar?

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

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

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

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

Which of the following best describes a polar molecule?

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

A molecule consists of a second period central atom with three other atoms singly bonded to it.There is one lone pair of electrons on the central atom,and the other atoms have lone pairs.What is the molecular geometry around the central atom?

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

Which of the following compounds is not a hydrocarbon?

Which of the following compounds is an alcohol?

Consider the following general wedge-and-dash diagram: Which of the following molecules could this diagram represent?

Which of the following compounds is an ether?

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

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

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

Which of the following is the best Lewis diagram for HCO₂^-?

Which of the following has a tetrahedral electron pair geometry surrounding the central atom? i.PH₃ ii.BH₃ iii.BeH₂ iv.OF₂

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 H₂CO₃?

Which of the following is the electron pair angle in PO₄^3-?