Topics 3,4,5 - Acids, Metals & Fuels: Alkanes & Alkenes

Question 1

What is the name of this molecule?

         H      H
          |        |
H — C — C — H
          |        |
         H      H

Answer 1

Ethane.

Question 2

How can bromine water be used to distinguish between an alkane and an alkene?

Answer 2

Alkenes decolourise bromine water but awlkanes don’t.

Question 3

What is the name of this molecule?

           H      H       H
            |        |       /
  H — C — C = C
            |                \
           H                H

Answer 3

Propene.

Question 4

What are Alkanes?

Answer 4

Alkanes are saturated hydrocarbons.