Chemistry 0620 · IGCSE · Formulae, functional groups and terminology

Formulae, functional groups and terminology — practice question

The diagram presents compound T as a carbon chain that carries a carboxylic acid functional group.
(a(i))[1]

Select, from the list, the word that describes compound T: alcohol, alkane, alkene, carboxylic acid.

(a(ii))[1]

Work out the formula of compound T so that the numbers of carbon, hydrogen and oxygen atoms are shown.

(b(i))[1]

State what is meant by the word catalyst.

(b(ii))[1]

Complete the ethanol sentence by choosing a word from the list: combustion, cracking, electrolysis, fermentation. Ethanol is manufactured from ethene or by [BLANK].

(c(i))[1]

Draw ethene so that all atoms and all bonds are visible.

(c(ii))[1]

Use the kinetic particle model to describe how far apart the particles are in a gas.

(c(iii))[1]

Explain why long-chain hydrocarbons are cracked to form short-chain hydrocarbons.

(c(iv))[1]

State the name of the polymer that is formed.

(d)[1]

Give one use for Terylene.

(e)[1]

Name one polymer that is present in food.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: a carboxylic acid

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