Snapquiz - Uses of Alkanes and Alkenes

Question 1. Which key feature gives alkenes different properties to alkanes?

A greater number of hydrogen atoms.
An oxygen atom.
A different number of carbon atoms.
A carbon-carbon double bond.

Question 2. What useful reaction can alkenes perform that alkanes can't?

Polymerisation.
Evaporation.
Combustion.
Oxidation.

Question 3. Which compound is formed from ethene monomers?

Poly(ethene).
Poly(propene).
Poly(chloroethene).
Poly(tetrafluoroethene).

Question 4. Which compound or compounds are formed when bromine is added to propene?

Propane and bromine.
Dibromopropane.
Propene and bromine (no reaction).
Dibromopropene.

Question 5. What does 'unsaturated' mean when referring to a hydrocarbon?

The molecule is safe to eat.
The molecule has room for more atoms.
The molecule cannot be polymerised.
The molecule isn't long enough.

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