Lesson Worksheet: Properties of Alkenes Chemistry • 7th Grade

In this worksheet, we will practice writing and interpreting the names and formulas of alkenes and describing trends in properties, such as melting points.

Q1:

What is the name of the alkene with the molecular formula CH36?

  • APropane
  • BPropene
  • CButene
  • DEthene
  • EButane

Q2:

What is the name of the alkene with the molecular formula CH24?

  • AMethene
  • BPropene
  • CEthene
  • DEthane
  • EPropane

Q3:

What is the general formula for an alkene with a single carbon–carbon double bond?

  • ACH2n+2
  • BCH
  • CCH2+
  • DCH2
  • ECH2

Q4:

Which industrial process produces alkenes from long-chain alkanes?

  • ACatalytic cracking
  • BFractional distillation
  • CContact Process
  • DHaber Process
  • EWater-gas shift reaction

Q5:

Which of the following is the structural formula of an alkene?

  • A
    CHCHHCHHCHHCCHHHHH
  • B
    HCHHCCHHCHBrHHCl
  • C
    CHHHCHCHCHHHHH
  • D
    CHCHHHCHCCHCHHHH
  • E
    CCHHHCHOCHHHHHCHHH

Q6:

Which of the following is not a structural formula of an alkene?

  • A
    CHCHHH
  • B
    CHCHHHHCCCCHHHHHHH
  • C
    CHCHHCHHCHHH
  • D
    CHCHCHCHHCHCHHHHHH
  • E
    CHCHHCCCHCHHHHHH

Q7:

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

  • ASolids and gases
  • BLiquids and gases
  • CSolids, liquids, and gases
  • DSolids and liquids

Q8:

Which of the following is not a property of ethene?

  • AFlammable
  • BColorless
  • CLiquid at room temperature
  • DSoluble in nonpolar solvents
  • EVolatile

Q9:

Which of the following statements describes why propene is unsaturated?

  • ASingle bonds exist between each of the carbon atoms.
  • BA double bond exists between two of the carbon atoms.
  • CEach hydrogen atom is connected to a carbon atom.
  • DPropene consists of carbon and hydrogen atoms.
  • EDouble bonds exist between each of the carbon atoms.

Q10:

Which of the following is not a use of alkenes?

  • AManufacturing plastics
  • BManufacturing rubber
  • CCracking
  • DProducing industrial chemicals
  • EBurning as a fuel

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