Chem 103 Final Exam | Verified Exam Questions and Answers | Latest
Updated Study Material 2026
Question:
What is a hydrocarbon?
Answer:
has carbons and hydrogens
Question:
What is an alkane and what is the general formula for an alkane?
Answer:
An alkane is a hydrocarbon with single bonds only; CnH2n+2
Question:
How do you name alkanes?
Answer:
ane
Question:
Give the molecular formulas for these alkanes: methane, ethane, propane, butane and pentane
Answer:
CH4,C2H6,C3H8,C4H10,C5H12
Question:
Give the names for these molecular formulas: C6H14, C7H16,C8H18, C9H20, C10H22
Answer:
hexane, heptane,octane,nonane, decane.
Question:
Which alkane is 85% of natural gas?
Answer:
methane
,Question:
Which alkanes contribute to the formation of fuel?
Answer:
propane and butane
Question:
Are alkanes saturated?
Answer:
Yes
Question:
What are structural/constitutional isomers?
Answer:
compounds that have the same molecular formula but different structural formulas.
Question:
When do alkanes start having structural isomers?
Answer:
at butane(2)
Question:
What does an isopropyl group look like?
Answer:
CH3CH CH3
Question:
What does isobutyl look like?
Answer:
CH3CHCH2 CH3
Question:
What is the formula for cycloalkanes?
Answer:
CnH2n
, Question:
Which cycloalkanes are the most abundant and stable?
Answer:
cyclopentane and cyclohexane, tetrahedral form(109.5) in cyclohexanes.
Question:
What are the two forms of the tetrahedral cyclohexane?
Answer:
boat and chair
Question:
What are some physical properties of alkanes?
Answer:
nonpolar, insoluble in water. Gas from 1-4 carbons, liquid from 5-17, and solid 18 and above.
Question:
Density =
Answer:
< 1 g/ml
Question:
Chemical Properties
Answer:
1.Combustion with oxygen to produce carbon dioxide and water. 2. Substition. E.g.; CH3Cl+ HCl,
CH2Cl2+2HCl
Question:
Properties of halogenated hydrocarbons
Answer:
good solvents-not very reactive or flammable. Many are toxic or pollutants.
Question:
Common name for chloromethane(CH3Cl)
Answer:
methyl chloride
Updated Study Material 2026
Question:
What is a hydrocarbon?
Answer:
has carbons and hydrogens
Question:
What is an alkane and what is the general formula for an alkane?
Answer:
An alkane is a hydrocarbon with single bonds only; CnH2n+2
Question:
How do you name alkanes?
Answer:
ane
Question:
Give the molecular formulas for these alkanes: methane, ethane, propane, butane and pentane
Answer:
CH4,C2H6,C3H8,C4H10,C5H12
Question:
Give the names for these molecular formulas: C6H14, C7H16,C8H18, C9H20, C10H22
Answer:
hexane, heptane,octane,nonane, decane.
Question:
Which alkane is 85% of natural gas?
Answer:
methane
,Question:
Which alkanes contribute to the formation of fuel?
Answer:
propane and butane
Question:
Are alkanes saturated?
Answer:
Yes
Question:
What are structural/constitutional isomers?
Answer:
compounds that have the same molecular formula but different structural formulas.
Question:
When do alkanes start having structural isomers?
Answer:
at butane(2)
Question:
What does an isopropyl group look like?
Answer:
CH3CH CH3
Question:
What does isobutyl look like?
Answer:
CH3CHCH2 CH3
Question:
What is the formula for cycloalkanes?
Answer:
CnH2n
, Question:
Which cycloalkanes are the most abundant and stable?
Answer:
cyclopentane and cyclohexane, tetrahedral form(109.5) in cyclohexanes.
Question:
What are the two forms of the tetrahedral cyclohexane?
Answer:
boat and chair
Question:
What are some physical properties of alkanes?
Answer:
nonpolar, insoluble in water. Gas from 1-4 carbons, liquid from 5-17, and solid 18 and above.
Question:
Density =
Answer:
< 1 g/ml
Question:
Chemical Properties
Answer:
1.Combustion with oxygen to produce carbon dioxide and water. 2. Substition. E.g.; CH3Cl+ HCl,
CH2Cl2+2HCl
Question:
Properties of halogenated hydrocarbons
Answer:
good solvents-not very reactive or flammable. Many are toxic or pollutants.
Question:
Common name for chloromethane(CH3Cl)
Answer:
methyl chloride
