Question

distinguish between Alkanes and alkenes

Answer 1

Alkanes are hydrocarbons (compounds containing only C and H) that have single covalent bonds joining the carbon atoms. Alkenes are hydrocarbons (compounds containing only C and H) that have one or more C=C double bonds (two C atoms are linked by 4 shared electrons).
Compared to alkanes, alkenes can undergo a larger range of chemical reactions such as combustion and various addition reactions( hydrogenation, addition polymerisation, hydration etc).

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