Chemistry 0620 · IGCSE · Formulae, functional groups and terminology

Formulae, functional groups and terminology — practice question

The six organic compounds are drawn below and labelled P, Q, R, S, T and U.
(a(i))[2]

Which two of these compounds are alcohols? Give your answer and explain it.

(a(ii))[1]

Which two of these compounds are saturated hydrocarbons?

(b)[3]

Complete the sentence about a homologous series using words from the list. alcohols chemical compounds elements functional mixtures physical A homologous series is a family of similar [BLANK] with similar [BLANK] properties because they have the same [BLANK] group.

(c(i))[1]

Draw the structure of ethene, showing every atom and every bond.

(c(ii))[2]

Describe how aqueous bromine can be used to demonstrate that ethene is an unsaturated compound.

(c(iii))[1]

Ethene is made by cracking. State the conditions needed for this process.

(c(iv))[1]

Fill in the missing product in the cracking equation for hexadecane, $C_{16}H_{34}$, as it forms propene and one other hydrocarbon. $C_{16}H_{34} \rightarrow C_3H_6 + [BLANK]$

Worked solution & mark scheme

This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: U and S

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