Chemistry 5070 · O Level · Polymers

Polymers — practice question

A waste sample contains plastic and copper.
(a)[2]

One of the plastics is the addition polymer poly(chloroethene). Complete the equation to show how poly(chloroethene) is formed.

(b(i))[1]

Plastic waste is eliminated by combustion. Complete the equation to show the complete combustion of poly(chloroethene). Use the empirical formula of poly(chloroethene), C$_2$H$_3$Cl, in the equation. $\dots\dots\dots\ \text{C}_2\text{H}_3\text{Cl} + \dots\dots\dots\ \text{O}_2 \rightarrow \dots\dots\dots\ \text{CO}_2 + \dots\dots\dots\ \text{H}_2\text{O} + \dots\dots\dots\ \text{HCl}$

(b(ii))[1]

Suggest why burning poly(chloroethene) will contribute to acid rain formation.

(c(i))[1]

Some waste plastics, such as nylon, are polyamides. Give one large-scale use of nylon.

(c(ii))[1]

The structure shows a monomer suitable for making a polyamide. Draw the partial structure of this polyamide. Show two repeat units.

(d)[2]

Copper waste is melted and then cooled to make new objects. Use the kinetic particle theory to describe how the movement and arrangement of the particles change as a liquid cools and turns into a solid.

(e)[2]

Explain why copper has a high melting point, using structure and bonding.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: The monomer chloroethene is correct

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