Question 1

What is the classification of the molecule below?

Accepted Answer

A)  polymer 
B)  fatty acid 
C)  saccharide 
D)  carbohydrate 
E)  triglyceride 
A)  polymer 
B)  fatty acid 
C)  saccharide 
D)  carbohydrate 
E)  triglyceride

Question 2

Which of the following is a geometric isomer of the structure given below?

Accepted Answer

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

Question 3

An unsaturated hydrocarbon is

Accepted Answer

A)  a hydrocarbon that contains oxygen. 
B)  a compound in which all carbon atoms have four single bonds. 
C)  a compound in which one or more carbon atoms have double or triple bonds. 
D)  a hydrocarbon that is dissolved in water. 
E)  a cycloalkane with five or more carbons. 
A)  a hydrocarbon that contains oxygen. 
B)  a compound in which all carbon atoms have four single bonds. 
C)  a compound in which one or more carbon atoms have double or triple bonds. 
D)  a hydrocarbon that is dissolved in water. 
E)  a cycloalkane with five or more carbons.

Question 4

Which of the structures below has the common name m-dichlorobenzene (where m- is meta)?

Accepted Answer

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

Question 5

How many isomers exist for the following benzene derivative,C6H4ClBr?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  5 
E)  none 
A)  2 
B)  3 
C)  4 
D)  5 
E)  none

Question 6

Which of the following statements concerning structural isomers is/are correct?
1)Structural isomers have the same elemental composition,but the atoms are linked in different ways.
2)Structural isomers have identical physical properties,but different chemical properties.
3)Structural isomers have identical structures,but contain different isotopes of the same elements.

Accepted Answer

A)  1 only 
B)  2 only 
C)  3 only 
D)  1 and 2 
E)  1,2,and 3 
A)  1 only 
B)  2 only 
C)  3 only 
D)  1 and 2 
E)  1,2,and 3

Question 7

When a secondary alcohol is oxidized,the product is a(n)____.

Accepted Answer

A)  ketone 
B)  ether 
C)  ester 
D)  aldehyde 
E)  amide 
A)  ketone 
B)  ether 
C)  ester 
D)  aldehyde 
E)  amide

Question 8

The molecule 2-chloro-4-methylhexane is made by addition of HCl to an alkene.Write a balanced chemical equation for this reaction.

Accepted Answer

The answer of The molecule 2-chloro-4-methylhexane is made by addition...

Question 9

Identify the product(s)of the hydrogenation of cis-2-hexene.

Accepted Answer

A)  2-hydroxyhexane 
B)  2,3-dihydroxyhexane 
C)  trans-2-hexane 
D)  carbon dioxide and water 
E)  hexane 
A)  2-hydroxyhexane 
B)  2,3-dihydroxyhexane 
C)  trans-2-hexane 
D)  carbon dioxide and water 
E)  hexane

Question 10

A ketone may be produced by oxidation of a(n)_____.

Accepted Answer

A)  alkane 
B)  alkene 
C)  secondary alcohol 
D)  primary alcohol 
E)  ether 
A)  alkane 
B)  alkene 
C)  secondary alcohol 
D)  primary alcohol 
E)  ether

Question 11

The addition of Br2 is used as the reaction to distinguish between alkanes and alkenes.What is the observation that accompanies this test?

Accepted Answer

A)  A bright red color is produced when Br2 reacts with an alkene. 
B)  Bromine dissolves in alkanes but not in alkenes. 
C)  Bromine is a dark red liquid.When it adds to the double bond of an alkene to make the dibromide,it becomes colorless. 
D)  The red color of bromine disappears when it dissolves in alkanes. 
E)  Bromine reacts with alkanes to form a precipitate. 
A)  A bright red color is produced when Br2 reacts with an alkene. 
B)  Bromine dissolves in alkanes but not in alkenes. 
C)  Bromine is a dark red liquid.When it adds to the double bond of an alkene to make the dibromide,it becomes colorless. 
D)  The red color of bromine disappears when it dissolves in alkanes. 
E)  Bromine reacts with alkanes to form a precipitate.

Question 12

When sulfur is added to rubber and the mixture is heated,the resulting rubber is still elastic but much stronger.This process is called

Accepted Answer

A)  addition polymerization 
B)  isomerization 
C)  oligomerization 
D)  vulcanization 
E)  halogenation 
A)  addition polymerization 
B)  isomerization 
C)  oligomerization 
D)  vulcanization 
E)  halogenation

Question 13

Which of the following chemical equations depicts an alkylation reaction?

Accepted Answer

A)  C6H6(   )+ CH3Cl(   )$\to$ C6H5CH3(   )+ HCl(g) 
B)  2 CH3OH(   )+ 3 O2(g)$\to$ 2 CO2(g)+ 4 H2O(   ) 
C)  C6H12(   )$\to$ C6H10(   )+ H2(g) 
D)  CH2ClCH2Cl(g)+ H2(g)$\to$CH3CH3(g)+ Cl2(g) 
E)  CHClCHCl(g)$\to$ CH2ClCH2Cl(g) 
A)  C6H6(   )+ CH3Cl(   )$\to$ C6H5CH3(   )+ HCl(g) 
B)  2 CH3OH(   )+ 3 O2(g)$\to$ 2 CO2(g)+ 4 H2O(   ) 
C)  C6H12(   )$\to$ C6H10(   )+ H2(g) 
D)  CH2ClCH2Cl(g)+ H2(g)$\to$CH3CH3(g)+ Cl2(g) 
E)  CHClCHCl(g)$\to$ CH2ClCH2Cl(g)

Question 14

Which of the following statements about polymers is/are correct?
1)Polypropylene and polyethylene are high molecular weight alkenes.
2)Addition polymers must be made from monomers which have at least one double or triple bond somewhere in the molecule.
3)Condensation polymerization reactions produce small molecules,like H2O,as byproducts to the polymer formation.

Accepted Answer

A)  1 only 
B)  2 only 
C)  3 only 
D)  2 and 3 
E)  1,2,and 3 
A)  1 only 
B)  2 only 
C)  3 only 
D)  2 and 3 
E)  1,2,and 3

Question 15

What is the name of the following compound?

Accepted Answer

A)  3,4-diethyl-5-methylheptane 
B)  3,4,5-heptane 
C)  3-ethyl-5-(2-butyl)hexane 
D)  3-(2-butyl)-3-ethylhexane 
E)  3,5,6-trimethylheptane 
A)  3,4-diethyl-5-methylheptane 
B)  3,4,5-heptane 
C)  3-ethyl-5-(2-butyl)hexane 
D)  3-(2-butyl)-3-ethylhexane 
E)  3,5,6-trimethylheptane

Question 16

Which of the following molecules might be a cycloalkane?

Accepted Answer

A)  C3H4 
B)  C4H10 
C)  C5H12 
D)  C6H10 
E)  C7H14 
A)  C3H4 
B)  C4H10 
C)  C5H12 
D)  C6H10 
E)  C7H14

Question 17

Putrescine and cadaverine are two compounds associated with decaying flesh or bad breath.These compounds belong to a class of molecules called ____.

Accepted Answer

A)  ethers 
B)  amines 
C)  ketones 
D)  esters 
E)  carboxylic acids 
A)  ethers 
B)  amines 
C)  ketones 
D)  esters 
E)  carboxylic acids

Question 18

Which one of the following hydrocarbons has cis and trans isomers?

Accepted Answer

A)  hexane 
B)  1-pentene 
C)  2-methylpropane 
D)  2-ethylbutane 
E)  2-pentene 
A)  hexane 
B)  1-pentene 
C)  2-methylpropane 
D)  2-ethylbutane 
E)  2-pentene

Question 19

Which of the following is the correct formula for 2-methyl-1-butene?

Accepted Answer

A)    
B)    
C)    
D)    
E)  none of these 
A)    
B)    
C)    
D)    
E)  none of these

Question 20

Which of the following statements is/are CORRECT?
1)Thermoplastics are a class of polymers that will not decompose at temperatures as great as 700 S1U1P1$\circ$S1S1P0C.
2)Thermosetting plastics harden when heated,but they regain their elasticity when cooled.
3)Elastomers are materials that spring back to their original shape when stretched.

Accepted Answer

A)  1 only 
B)  2 only 
C)  3 only 
D)  1 and 2 
E)  1,2,and 3 
A)  1 only 
B)  2 only 
C)  3 only 
D)  1 and 2 
E)  1,2,and 3

Exam 24: Carbon: Not Just Another Element

What is the classification of the molecule below?

Which of the following is a geometric isomer of the structure given below?

An unsaturated hydrocarbon is

Which of the structures below has the common name m-dichlorobenzene (where m- is meta)?

How many isomers exist for the following benzene derivative,C6H4ClBr?

When a secondary alcohol is oxidized,the product is a(n)____.

The molecule 2-chloro-4-methylhexane is made by addition of HCl to an alkene.Write a balanced chemical equation for this reaction.

Identify the product(s)of the hydrogenation of cis-2-hexene.

A ketone may be produced by oxidation of a(n)_____.

The addition of Br2 is used as the reaction to distinguish between alkanes and alkenes.What is the observation that accompanies this test?

When sulfur is added to rubber and the mixture is heated,the resulting rubber is still elastic but much stronger.This process is called

Which of the following chemical equations depicts an alkylation reaction?

What is the name of the following compound?

Which of the following molecules might be a cycloalkane?

Putrescine and cadaverine are two compounds associated with decaying flesh or bad breath.These compounds belong to a class of molecules called ____.

Which one of the following hydrocarbons has cis and trans isomers?

Which of the following is the correct formula for 2-methyl-1-butene?

Basic Concepts of Chemistry

Mathlets Review: The Tools of Quantitative Chemistry

Atoms, molecules, and Ions

Chemical Reactions

Stoichiometry: Quantitative Information About Chemical Reactions

Principles of Chemical Reactivity: Energy and Chemical Reactions

The Structure of Atoms

The Structure of Atoms and Periodic Trends

Bonding and Molecular Structure

Bonding and Molecular Structure: Orbital Hybridization and Molecular Orbitals

Gases and Their Properties

Intermolecular Forces and Liquids

The Chemistry of Solids

Solutions and Their Behavior

Chemical Kinetics: the Rates of Chemical Reactions

Principles of Reactivity: Chemical Equilibria

The Chemistry of Acids and Bases

Principles of Reactivity: Other Aspects of Aqueous Equilibria

Entropy and Free Energy

Principles of Reactivity: Electron Transfer Reactions

Environmental Chemistry Earths Environment,energy,and Sustainability

The Chemistry of the Main Group Elements

The Chemistry of the Transition Elements

Biochemistry

Nuclear Chemistry

Filters

How many isomers exist for the following benzene derivative,C₆H₄ClBr?

The addition of Br₂ is used as the reaction to distinguish between alkanes and alkenes.What is the observation that accompanies this test?