Chemistry 0620 · IGCSE · Alkanes

Alkanes — practice question

This question concerns hydrocarbons.
(a(i))[1]

What is the name of the homologous series containing methane, ethane, propane and butane?

(a(ii))[1]

State how the boiling point of this homologous series changes as the number of carbon atoms increases.

(a(iii))[1]

Deduce the general formula for this homologous series.

(b)[2]

Finish the word equation for the complete combustion of ethane: ethane + oxygen → [BLANK] + [BLANK].

(c(i))[2]

Long-chain hydrocarbons may be cracked to form alkenes and hydrogen. State two conditions needed for cracking.

(c(ii))[1]

State one other use of the diesel oil fraction.

(d)[2]

Alkene molecules can join together to make polymers. Define the term polymer.

Worked solution & mark scheme

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