C7: Quiz 4

1) What is a hydrocarbon?

 

2) Why are alkanes known as saturated hydrocarbons?

 

3) What is an alkene?

 

4) Write down the general molecular formula for an alkene.

 

5) The first alkene is ethene (C₂H₄). Draw the displayed formula for ethene.

 

6) Propene contains 3 carbon atoms.

a) What is the molecular formula for propene?

b) Draw the displayed formula for propene.

 

7) Say whether the following hydrocarbons are alkenes.

a) C₅H₁₀

b) C₃H₈

c) C₁₁H₂₄

d) C₁₄H₂₈

 

8) How can we test if a hydrocarbon is an alkene or an alkane?

 

9) Are alkanes or alkenes more reactive?

 

10) Write the word equation for the complete combustion of a hydrocarbon.

 

11) Write the balanced chemical equation for the combustion of the alkene C₈H₁₆.

Show Answers