Question 1

The molecule below has ________ primary carbon atoms,________ secondary carbon atoms,________ tertiary carbon atoms,and ________ quaternary carbon atoms.

Accepted Answer

6 or six,2

Question 2

What is the classification of each labeled carbon atom in the structure below?

Accepted Answer

A) C1 is a secondary carbon and C2 is a primary carbon. 
B) C1 is a tertiary carbon and C2 is a secondary carbon. 
C) C1 is a secondary carbon and C2 is a tertiary carbon. 
D) C1 is a primary carbon and C2 is a tertiary carbon. 
A) C1 is a secondary carbon and C2 is a primary carbon. 
B) C1 is a tertiary carbon and C2 is a secondary carbon. 
C) C1 is a secondary carbon and C2 is a tertiary carbon. 
D) C1 is a primary carbon and C2 is a tertiary carbon.

Question 3

How many secondary carbons are in the straight-chain alkane with the formula C4H10?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 4 
A) 0 
B) 1 
C) 2 
D) 3 
E) 4

Question 4

The two structures below represent the same compound.

Accepted Answer

A) True 
 B)False

Question 5

Which formula represents an acyclic alkane?

Accepted Answer

A) C10H18 
B) C9H18 
C) C12H26 
D) C10H20 
E) C12H28 
A) C10H18 
B) C9H18 
C) C12H26 
D) C10H20 
E) C12H28

Question 6

Which alkane has the lowest boiling point?

Accepted Answer

A) Octane 
B) Butane 
C) Ethane 
D) Hexane 
E) Propane 
A) Octane 
B) Butane 
C) Ethane 
D) Hexane 
E) Propane

Question 7

The name of the compound below is ________.

Accepted Answer

1-butyl-2-

Question 8

Which molecule is a constitutional isomer of the compound (CH3)2CH(CH2)2CH3?

Accepted Answer

A) CH3CH2CH2CH(CH3)2 
B)    
C)    
D)    
A) CH3CH2CH2CH(CH3)2 
B)    
C)    
D)

Question 9

How many hydrogen atoms are present in an acyclic alkane with five (5)carbon atoms?

Accepted Answer

A) 5 
B) 7 
C) 9 
D) 10 
E) 12 
A) 5 
B) 7 
C) 9 
D) 10 
E) 12

Question 10

CO2 is a greenhouse gas.

Accepted Answer

A) True 
 B)False

Question 11

What is the classification of C1 on the molecule below?

Accepted Answer

A) Primary 
B) Secondary 
C) Tertiary 
D) Quaternary 
A) Primary 
B) Secondary 
C) Tertiary 
D) Quaternary

Question 12

A cyclic alkane has the general molecular formula CnH2n,where n is the number of carbon atoms it contains.

Accepted Answer

A) True 
 B)False

Question 13

Which compound has the lowest melting point?

Accepted Answer

A) CH3CH2CH2CH2CH3 
B) CH3CH2CH2CH2CH2CH2CH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3 
A) CH3CH2CH2CH2CH3 
B) CH3CH2CH2CH2CH2CH2CH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3

Question 14

Two different compounds with the same molecular formulas that differ in the way the atoms are connected to each other are called ________.

Accepted Answer

constituti

Question 15

An acyclic alkane has the general molecular formula CnH2n-2,where n is the number of carbon atoms it contains.

Accepted Answer

A) True 
 B)False

Question 16

The molecules below are constitutional isomers.

Accepted Answer

A) True 
 B)False

Question 17

How many quaternary carbons are in this molecule?

Accepted Answer

A) 0 
B) 1 
C) 4 
D) 5 
A) 0 
B) 1 
C) 4 
D) 5

Question 18

The compound below is an example of a saturated hydrocarbon.

Accepted Answer

A) True 
 B)False

Question 19

Asphalt is a mixture of high molecular weight hydrocarbons. Which solvent would be best for removing asphalt from a newly paved road off the bottom of a pair of shoes?

Accepted Answer

A) Water 
B) Octane 
C) Methanol,CH3OH 
D) NaCl(aq) 
A) Water 
B) Octane 
C) Methanol,CH3OH 
D) NaCl(aq)

Question 20

Which of the following is a constitutional isomer of the compound shown below?

Accepted Answer

A)    
B)    
C)    
D)    
E) More than one of the molecules is a constitutional isomer of the original molecule. 
A)    
B)    
C)    
D)    
E) More than one of the molecules is a constitutional isomer of the original molecule.

Exam 12: Alkanes

The molecule below has ________ primary carbon atoms,________ secondary carbon atoms,________ tertiary carbon atoms,and ________ quaternary carbon atoms.

What is the classification of each labeled carbon atom in the structure below?

How many secondary carbons are in the straight-chain alkane with the formula C4H10?

The two structures below represent the same compound.

Which formula represents an acyclic alkane?

Which alkane has the lowest boiling point?

The name of the compound below is ________.

Which molecule is a constitutional isomer of the compound (CH3)2CH(CH2)2CH3?

How many hydrogen atoms are present in an acyclic alkane with five (5)carbon atoms?

CO2 is a greenhouse gas.

What is the classification of C1 on the molecule below?

A cyclic alkane has the general molecular formula CnH2n,where n is the number of carbon atoms it contains.

Which compound has the lowest melting point?

Two different compounds with the same molecular formulas that differ in the way the atoms are connected to each other are called ________.

An acyclic alkane has the general molecular formula CnH2n-2,where n is the number of carbon atoms it contains.

The molecules below are constitutional isomers.

How many quaternary carbons are in this molecule?

The compound below is an example of a saturated hydrocarbon.

Asphalt is a mixture of high molecular weight hydrocarbons. Which solvent would be best for removing asphalt from a newly paved road off the bottom of a pair of shoes?

Which of the following is a constitutional isomer of the compound shown below?

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes,reaction Rates,and Equilibrium

Gases,liquids,and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen,halogen,or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids,esters,and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids,proteins,and Enzymes

Nucleic Acids and Protein Synthesis

Metabolism and Energy Production

Carbohydrate,lipid,and Protein Metabolism

Filters

The molecule below has primary carbon atoms, secondary carbon atoms, tertiary carbon atoms,and quaternary carbon atoms.

How many secondary carbons are in the straight-chain alkane with the formula C₄H₁₀?

Which molecule is a constitutional isomer of the compound (CH₃)₂CH(CH₂)₂CH₃?

CO₂ is a greenhouse gas.

A cyclic alkane has the general molecular formula C_nH_2n,where n is the number of carbon atoms it contains.

An acyclic alkane has the general molecular formula C_nH_2n-2,where n is the number of carbon atoms it contains.