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?

  • A C H 7 2 1
  • B C H 7 7
  • C C H 7 1 6
  • D C H 7 1 4
  • E C H 7 1 0

Q2:

What is the general formula for an alkane?

  • A C H 2
  • B C H
  • C C H + 4
  • D C H 2 + 2
  • E C H 2

Q3:

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

  • A C H 3 4
  • B C H 3 3
  • C C H 3 6
  • D C H 3 9
  • E C H 3 8

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?

  • A C H 6 1 6
  • B C H 6 1 2
  • C C H 6 1 4
  • D C H 6 1 8
  • E C H 6 6

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
  • DPropene
  • EHexane

Q11:

Which of the following alkanes is the most volatile?

  • APropene
  • BButane
  • CHeptane
  • DPentane
  • EEthane

Q12:

Which of the following alkanes has the greatest viscosity?

  • AOctane
  • BPentane
  • CMethane
  • DPropene
  • EEthane

Q13:

Which of the following alkanes is the most flammable?

  • APropene
  • BEthane
  • CButane
  • DHeptane
  • EPentane

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