Snapquiz - Uses of Alkanes and Alkenes

This is the Snapquiz on Uses of Alkanes and Alkenes. Click here or use the embedded video if you haven't watched the lesson yet.


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

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


Question 2. What is the name of the process which divides long alkanes into smaller alkanes and alkenes?

Breaking.
Degrading.
Splitting.
Cracking


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

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


Question 4. Which key feature gives alkenes different properties to alkanes?

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


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

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


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