Deck 11: Organic Compounds: Alkanes

Question 1

What is a characteristic shared by the alkanes?

A)soluble
B)polar
C)flammable
D)colored

Answer 1

flammable

Question 2

Which of the following structural formulas represents an normal (unbranched)alkane?

A)
B)
C)
D)

Answer 2

Question 3

What is a major difference between inorganic and organic compounds?

A)There are many more inorganic compounds than organic compounds.
B)Organic compounds contain carbon; few inorganic compounds do.
C)Organic compounds are never ionic.
D)Organic compounds tend to be more polar than inorganic compounds

Answer 3

Organic compounds contain carbon; few inorganic compounds do.

Question 4

Which of the following compounds can exhibit structural isomerism?

A)propane
B)methane
C)butane
D)ethane

Question 5

Which statement is not correct? Functional groups are

A)to organic chemistry as polyatomic ions are to inorganic chemistry.
B)the parts of molecules used to differentiate classifications of organic molecules.
C)are chemically bound to each other in order to develop larger molecules.
D)there is more than one correct response.

Question 6

Which of the following compounds is a structural isomer of 2-methylbutane?

A)propane
B)2-methylpropane
C)butane
D)pentane

Question 7

What is meant by the term "saturated" when describing hydrocarbons?

A)They are saturated with water.
B)The hydrocarbons are saturated with carbons in the skeleton of the compounds.
C)They are saturated with hydrogen and only have single bonds between carbons.
D)The container holding the compound has no other compound.

Question 8

Which of the following is a use for alkanes?

A)fuel
B)lubricant
C)solvent
D)more than one response is correct

Question 9

Which of the following terms applies to the alkanes?

A)hydrophobic
B)hydrophilic
C)soluble
D)bases

Question 10

Identify the correct statement: The alkanes represent one family of organic compounds

A)in which the halogens are a major component.
B)in which there is at least one double bond between carbons.
C)that is composed of carbon and hydrogen.
D)in which hydrogens can be bonded to other hydrogens.

Question 11

How many structural isomers are possible for compounds with a molecular formula C₄H₁₀?

A)2
B)3
C)4
D)5

Question 12

Which of the following is an alcohol?

A)CH₃CH₂COOH
B)CH₃CH₂OH
C)CH₃COCH₃
D)CH₃CH₂Br

Question 13

Which applies to the manner in which carbon bonds in alkanes?

A)The bonds are formed with carbon using an sp³ configuration.
B)The bonds between carbon and other atoms are ionic.
C)Carbon to carbon bonds are expected to be double bonds.
D)The bonds formed by carbon all use p orbitals.

Question 14

The naming of organic compounds is specific.Which is an incorrect statement?

A)Many compounds have been known long enough to have common names.
B)The naming system of organic compounds is set by IUPAC rules.
C)The naming system requires that the longest carbon chain must always be found.
D)Organic compounds must have both an IUPAC and a common name.

Question 15

What is the reason why there are so many organic compounds?

A)Organic compounds are produced by living things.
B)Unlike inorganic compounds,organic compounds can be cyclic.
C)Carbon atoms can form stable covalent bonds with other carbon atoms.
D)Organic compounds can be larger than inorganic compounds.

Question 16

All of the members of the alkane series of hydrocarbons have the general formula _____ .

A)C_nH_2n
B)C_nH_n
C)C_nH_2n+2
D)C_nH_{2n - 2}

Question 17

Identify the correct statement.Cycloalkanes are

A)compounds that have a flat molecular structure.
B)saturated hydrocarbons.
C)compounds that cannot have the hydrogens removed and replaced by chlorine.
D)None of these statements is correct.

Question 18

Which of the following formulas represents a saturated hydrocarbon?

A)C₂H₆
B)C₂H₄
C)C₃H₆
D)C₅H₁₀

Question 19

The vast number of organic compounds is due to the unique chemistry of carbon.This chemistry involves

A)formation of long chains.
B)cyclization.
C)isomerism.
D)More than one answer is correct.

Question 20

Which of the following formulas does not represent an organic compound?

A)CH₄
B)CH₃CH₂NH₂
C)CH₃CH₃CH₃
D)All are organic compounds

Question 21

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

A)
B)
C)
D)

Question 22

Which of the following is the structural formula of 1-bromo-2,2-dimethylpropane?

A)
B)
C)
D)

Question 23

The IUPAC name for the chemical shown contains an ethyl group located at what position?

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

Question 24

The IUPAC name for the following compound is _____.

A)2-ethylbutane
B)2-methylbutane
C)3-methylpentane
D)3-ethylbutane

Question 25

How many isomers (structural + geometric)exist for dibromocyclopentane (C₅H₈Br₂)?

A)5
B)6
C)4
D)3

Question 26

The following compound would be named ____-1,2-dimethylcyclopropane.

A)cis
B)trans
C)either cis or trans
D)neither cis nor trans

Question 27

What the correct IUPAC name for the compound shown?

A)1-bromo-3-ethyl-1-methylcyclopropane
B)1-bromo-2-ethyl-1-methylcyclopropane
C)1-bromo-1-ethyl-2-methylcyclopropane
D)2-bromo-1-ethyl-2-methylcyclopropane

Question 28

What is the longest carbon chain for the compound shown?

A)7
B)8
C)9
D)10

Question 29

Complete combustion of pentane produces _____ .

A)CO and H₂O
B)CO₂ and H₂O
C)CO₂ and CO
D)CO and C

Question 30

The name for the following structure will end with ____.

A)ethane
B)butane
C)hexane
D)octane

Question 31

The compound shown has the IUPAC name of _____.

A)4-isopropyloctane
B)5-isopropyloctane
C)5-sec-butyloctane
D)4-propyloctane

Question 32

A general formula for cycloalkanes is _____ .

A)C₂H_2n+2
B)C_nH_2n
C)C_nH_{2n - 2}
D)C_nH_{2n - 4}

Question 33

Which of the following compounds can exist in the form of geometric isomers?

A)1,2-dibromocyclopentane
B)1,1-dibromocyclopentane
C)1-bromocyclopentane
D)1-bromo-1-methylcyclopentane

Question 34

How many structural isomers of C₇H₁₆ have five carbon atoms in the longest carbon chain?

A)3
B)4
C)5
D)6

Question 35

Which of the following cycloalkanes contains a total of 12 carbon atoms?

A)1-ethyl-2methylcyclononane
B)1-isopropyl-2-methylcycloheptane
C)1-methyl-2-ethylcycloheptane
D)methylcyclodecane

Question 36

A compound is incorrectly named 2-ethyl 1-2,4-dimethylhexane.What would be the correct IUPAC name?

A)3,3,5-trimethylheptane
B)3,3,4-trimethylheptane
C)2,2,4-trimethylheptane
D)2,4-dimethyl 1-2-ethylhexane

Question 37

An alkane with 10 carbon atoms is a ____ at room temperature.

A)solid
B)liquid
C)gas
D)can't tell

Question 38

How many isomers (structural + geometric)exist for dichlorocyclopropane (C₃H₄Cl₂)?

A)2
B)3
C)4
D)5

Question 39

The correct name for the alkyl group shown below is _____ .

A)butyl
B)isobutyl
C)sec-butyl
D)t-butyl

Question 40

Alkanes are ____ in water and ____ than water.

A)insoluble,less dense
B)soluble,less dense
C)insoluble,more dense
D)soluble,more dense

Question 41

The structural formula of 1-bromo-2,2-dimethylbutane is _____ .

A)
B)
C)
D)

Question 42

When the following hydrocarbon reacts with an excess of oxygen gas,the balanced equation would contain how many moles of water?

A)5
B)6
C)10
D)12

Question 43

Alkanes react readily with _____ .

A)sodium hydroxide
B)hydrochloric acid
C)sulfuric acid
D)none of the choices

Question 44

How many hydrogen atoms are needed to complete the following structure? C=C-N-C

A)6
B)7
C)9
D)10

Question 45

You arrive home from class to find your roommate complaining of a headache,dizziness,and nausea.Upon further investigation you believe they may have carbon monoxide poisoning.What should be the first step taken?

A)remove the victim to fresh air
B)inspect the house for leaks
C)close off the house to not affect the outside
D)none of the choices

Question 46

When ethane burns in a limited supply of oxygen,the chemical reaction would be which of the following?

A)
B)
C)
D)a and c
E)all of the above

Question 47

What is the IUPAC name for the following alkane?

A)2-ethylpropane
B)2-methylbutane
C)pentane
D)3,3-dimethylpropane

Question 48

Which of the following is NOT a functional group associated with organic molecules? (Note: R represents any alkyl chain.)

A)
B)
C)
D)All are functional groups.

Question 49

What is the IUPAC name for the compound shown?

A)1,2,5,6-tetramethylcycloheptane
B)1,2,4,5-tetramethylcycloheptane
C)1,3,4,6-tetramethylcycloheptane
D)di(1,2-dimethyl)cycloheptane

Question 50

An unknown substance is a liquid at room temperature,reacts readily with oxygen,and is a nonconductor.Which of the listed compounds might this substance be?

A)C₆H₆
B)K₂CO₃
C)H₂SO₄
D)NH₄HCO₃

Question 51

Which of the following compounds would be classified as inorganic?

A)CH₃CH₂OH
B)CH₂ClCH₂Cl
C)NaC₂H₃O₂
D)C₅H₁₂

Question 52

Complete combustion of an alkane produces what products?

A)CO₂ and O₂
B)CO₂ and H₂O
C)CO and H₂O
D)C and H₂O

Question 53

Organic chemistry is the branch of chemistry involved with carbon based compounds.Carbon is a member of which group of elements on the periodic table?

A)transition
B)inner transition
C)representative
D)noble

Question 54

Due to the method used for treatment,which of the following might be found in drinking water?

A)methyl sulfide
B)chloromethane
C)formaldehyde
D)bromobenzene

Question 55

What is the most common type of bond found in organic molecules?

A)covalent
B)ionic
C)metallic
D)coordinated

Question 56

Give the IUPAC name for the following chemical.

A)3,6-diethyl-3-methylnonane
B)2,2,5,6-tetraethylhexane
C)2,2,5-triethyloctane
D)3-ethyl-3-methyl-6-propyldecane

Question 57

cis-1,2-Dimethylcyclohexane and trans-1,2-dimethylcyclohexane are examples of what type of isomers?

A)structural isomers
B)stereoisomers
C)geometric isomers
D)more than one response is correct

Question 58

Three physical properties shown below beside different alkane series.Which of the series is(are)listed in the order of increase (lowest to highest)for the corresponding property?

A)Density: C₄H₁₀ < C₅H₁₂ < C₈H₁₈
B)Melting Point: C₈H₁₈ < C₅H₁₂ < C₄H₁₀
C)Boiling Point: C₅H₁₂ < C₄H₁₀ < C₈H₁₈
D)All are correctly ranked.

Question 59

The following two structures would be classified as what?

A)geometric isomers
B)structural isomers
C)stereoisomers
D)conformations

Question 60

Which of the following best represents the tetrahedral shape of sp³ hybridized carbons? (Note: a solid wedge is pointed towards you and a dashed wedge is pointed away.)

A)
B)
C)
D)

Question 61

Carbon atom tends to form tetrahedral structures and carbon is the basis of organic compounds,so,all organic compounds tend to be tetrahedral in shape.

Question 62

An unlimited number of carbon atoms can bond together to form chains.

Question 63

Isomers differ from each other in the number of neutrons present in each.

Question 64

Functional groups are to organic chemistry as monoatomic ions are to inorganic chemistry.

Question 65

Most organic compounds contain ionic bonds.

Question 66

One of the characteristics of hydrocarbons is that they range from slightly soluble in water to very soluble in water.

Question 67

Carbon-carbon bonds are usually strong and covalent.

Question 68

When one conformation of an alkane changes into another,there is rotation about carbon-carbon single bonds.

Question 69

Inorganic compounds are never found in living systems.

Question 70

Given the fact that organic compounds like waxes and oils have low melting points and make good lubricants,it's a good bet that the main type of interparticle interaction is due to_____.

A)dipole-dipole attractions
B)dispersion forces
C)hydrogen bonding
D)ionic interactions

Question 71

The condensed structural formula for 2,3-dimethylbutane would be which of the following?

A)CH₃CH₂CH₂CH₂CH₃
B)CH₃CH₂C(CH₃)₂CH₂CH₃
C)CH₃CH(CH₃)CH(CH₃)CH₃
D)CH₃CH(CH₃)CH(CH₃)CH₂CH₃

Question 72

Isomers always have the same molecular formula.

Question 73

Organic compounds are always derived from a living source.

Question 74

Organic compounds can contain other elements such as oxygen or nitrogen.

Question 75

Isomers always have the same empirical formula.

Question 76

Most inorganic compounds have a higher melting point than organic compounds.

Question 77

Organic chemistry can be defined as the chemistry of carbon-containing compounds.

Question 78

Some of the symptoms of carbon monoxide poisoning are headache,nausea,and rapid respiration.

Question 79

There are more inorganic compounds than organic compounds.

Question 80

Isomers have identical physical and chemical properties.