Snapquiz - Uses of Alkanes and Alkenes

Question 1. What would we observe if we added bromine water to an alkane?

The bromine water would go from brown to colourless.
The bromine water would remain colourless.
The bromine water would go from colourless to brown.
The bromine water would remain brown.

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

Evaporation.
Combustion.
Polymerisation.
Oxidation.

Question 3. Which compound or compounds are formed when bromine is added to butane?

Butane and bromine (no reaction).
Dibromobutene.
Dibromobutane.
Butene and bromine.

Question 4. Which compound is formed from ethene monomers?

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

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

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

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