Worksheet: Properties of Alkanes

In this worksheet, we will practice writing and interpreting the names and formulas of alkanes and describing trends in physical properties.

Q1:

What is the molecular formula of an alkane with 7 carbon atoms?

  • ACH721
  • BCH77
  • CCH716
  • DCH714
  • ECH710

Q2:

What is the general formula for an alkane?

  • ACH2
  • BCH
  • CCH+4
  • DCH2+2
  • ECH2

Q3:

What is the chemical formula for an alkane with 3 carbon atoms?

  • ACH34
  • BCH33
  • CCH36
  • DCH39
  • ECH38

Q4:

What is the name of the alkane with the chemical formula CH410?

  • AEthyne
  • BPentane
  • CHexane
  • DPropene
  • EButane

Q5:

What is the name of the alkane with the chemical formula CH4?

  • AMethane
  • BMethene
  • CMethyne
  • DEthane
  • EMethanol

Q6:

What is the name of the alkane with the chemical formula CH38?

  • AEthyne
  • BMethane
  • CPropane
  • DEthane
  • EButane

Q7:

What is the molecular formula for an alkane with 6 carbon atoms?

  • ACH616
  • BCH612
  • CCH614
  • DCH618
  • ECH66

Q8:

Which of the following is not a property of all alkanes?

  • ALess dense than water
  • BSaturated
  • CImmiscible with water
  • DGas at room temperature
  • EHydrocarbon

Q9:

A Wittig reagent has the shown structural formula.

Ph3P+CHCH2CH3
This reagent reacts with a carbonyl compound with the formula CHO1012 to produce 4-phenyl-3-heptene. What is the name of the carbonyl compound?

  • A1-Phenyl-1-butanone
  • B4-Phenyl-1-butanone
  • C3-Phenyl-2-butanone
  • D2-Phenyl-2-butanone
  • E1-Phenyl-2-butanone

Q10:

Which of the following alkanes has the highest melting point?

  • AEthane
  • BButane
  • CPentane
  • DPropane
  • EHexane

Q11:

Which of the following alkanes is the most volatile?

  • APropane
  • BButane
  • CHeptane
  • DPentane
  • EEthane

Q12:

Which of the following alkanes has the greatest viscosity?

  • AOctane
  • BPentane
  • CMethane
  • DPropane
  • EEthane

Q13:

Which of the following alkanes is the most flammable?

  • APropane
  • BEthane
  • CButane
  • DHeptane
  • EPentane

Q14:

Which of the following compounds belongs to the homologous series of alkanes?

  • ACH42
  • BCH46
  • CCH44
  • DCH48
  • ECH410

Q15:

Complete: Alkanes are known as saturated hydrocarbons because .

  • Athey have at least one double bond between carbon atoms
  • Bthey only have single bonds between carbon atoms
  • Cthey have alternating single and double bonds between carbon atoms
  • Dthey have at least one triple bond between carbon atoms
  • Ethey have only double bonds between carbon atoms

Q16:

Fill in the blanks: An alkane with 2 carbons is known as and has the formula .

  • Amethane, CH26
  • Bethane, CH24
  • Cethane, CH22
  • Dethane, CH26
  • Emethane, CH24

Q17:

Arrange the following alkanes in order of increasing boiling point:

  1. Nonane
  2. 3-Methyloctane
  3. 2,4-Dimethylheptane
  • AIII < I < II
  • BI < II < III
  • CII < III < I
  • DIII < II < I

Q18:

Which of the following alkanes has the lowest density?

  • AEthane
  • BButane
  • CPentane
  • DPropane
  • EMethane

Q19:

Which of the following formulas is of an alkane that is a gas at room temperature?

  • ACH410
  • BCH1124
  • CCH614
  • DCH1736
  • ECH1328

Q20:

In which of the following phases can alkanes exist at room temperature?

  • ASolids and gases
  • BSolids, liquids, and gases
  • CSolids and liquids
  • DLiquids and gases
  • EGases

Q21:

Which of the following is not a use of alkanes?

  • ALubricating oil
  • BPropellants in aerosol sprays
  • CParaffin wax
  • DRoad surfacing
  • EManufacturing plastics

Q22:

Which of the following alkanes has the lowest boiling point?

  • APropane
  • BEthane
  • CPentane
  • DButane
  • EMethane

Q23:

Which of the following is not a common use of alkanes?

  • APropellants
  • BGas burners
  • CPlastics
  • DSolvents
  • EFuels

Q24:

What is the general formula for the group of the compounds to which the following displayed formula is related?

CHHHCCHHHHH
  • ACHnn
  • BCHnn2+2
  • CCH22n
  • DCHnn2
  • ECHnn22

Q25:

What is the general formula for the group of the compounds to which the following displayed formula is related?

CCHHCHCHHCHHCHHHCHHCHHCCHHHHHH
  • ACHnn2+2
  • BCHnn22
  • CCH22n
  • DCHnn2
  • ECHnn

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