IGCSE Chemistry Extended 11.8 Polymers Topic Practice

CAIE IGCSE Chemistry Extended 11.8 Polymers question practice helps you revise this syllabus point with the course map in view. Use this page to focus on one topic, check the style of questions available, and connect each attempt back to the knowledge area it is testing.

EduNinja keeps Chemistry practice aligned to CAIE at Extended level, so you can move from topic review into exam-style question bank work without losing the syllabus structure. Start with a small set, mark the weak steps, then return to nearby topic links when a definition, graph, calculation, or explanation needs repair.

[Maximum number: 1]

A list of gases is shown.
ammonia
carbon dioxide
carbon monoxide
ethene
fluorine
oxygen
sulfur dioxide
xenon

Answer the following questions using only the gases from the list. Each gas may be used once, more than once or not at all.

Give the name of the gas that:

can form a polymer

[Maximum number: 1]

Give the name of the process that is used:

to produce large molecules from monomers

[Maximum number: 2]

Fluorine is a Group VII element. Fluorine forms compounds with metals and non-metals.

Tetrafluoroethene is an unsaturated compound with the formula $\mathrm{C}_{2} \mathrm{~F}_{4}$ . Tetrafluoroethene is the monomer used to make the polymer poly(tetrafluoroethene).

Tetrafluoroethene can be polymerised to form poly(tetrafluoroethene).

Draw one repeat unit of poly(tetrafluoroethene). Show all of the atoms and all of the bonds.

[Maximum number: 2]

The structures of six organic compounds are shown.
A

Compound A forms an addition polymer.

Draw two repeat units of the addition polymer formed from A.

[Maximum number: 4]

The gases $\mathrm{Ar}, \mathrm{CO}_{2}, \mathrm{~N}_{2}$ and $\mathrm{O}_{2}$ are in clean, dry air.
$\mathrm{CO}, \mathrm{NO}, \mathrm{NO}_{2}$ and $\mathrm{SO}_{2}$ are gases commonly found in polluted air.

(a)

The $\mathrm{CO}_{2}$ in air is part of the carbon cycle.

The scheme shows a simple representation of part of the carbon cycle.

[ 4 ]

(i)

State the scientific terms for each of process A and process B.

A
B

[ 2 ]

(ii)

Plants convert glucose into complex carbohydrates.

A unit of glucose can be represented as $\mathrm{HO}-\square \mathrm{OH}$ .
Complete the diagram to show the complex carbohydrate formed from three units of glucose. Show all of the atoms and all of the bonds in the linkages.

[ 2 ]

[Maximum number: 5]

The chemical equation for the complete combustion of ethanol, $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$ , is shown.

\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+3 \mathrm{O}_{2} \rightarrow 2 \mathrm{CO}_{2}+3 \mathrm{H}_{2} \mathrm{O}

The energy released when one mole of ethanol undergoes complete combustion is 1280 kJ .
Part of the energy level diagram for this reaction is shown.

(a)

Ethane-1,2-diol has the following structure.

[ 5 ]

(i)

Ethane-1,2-diol can undergo condensation polymerisation but cannot undergo addition polymerisation.

Explain why ethane-1,2-diol cannot undergo addition polymerisation.
(iii) Ethane-1,2-diol undergoes condensation polymerisation with molecule Y.

The diagrams represent the structures of ethane-1,2-diol and molecule Y.

ethane-1,2-diol

molecule Y

[ 1 ]

(ii)

Draw the condensation polymer formed between ethane-1,2-diol and molecule Y. Show one repeat unit. Show all of the atoms and all of the bonds in the linkage.

[ 3 ]

(iii)

Name the type of condensation polymer formed between ethane-1,2-diol and molecule Y.

[ 1 ]