file · Web viewUsing the word bank provided, complete the following sentences. double,...

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Chemistry in Society National 5 Plastics Homework 1. Using the word bank provided, complete the following sentences. double, addition, single, condensation, unsaturated, polymerisation, saturated a) Addition polymerisation occurs when small _____________ momomers join together. b) During addition polymerisation the ___________ bond in each monomer breaks. c) Polyamides are examples of _______________ polymers. 2. Plastics and fibres can be natural or synthetic. a) What is meant by the term synthetic? b) State one advantage of synthetic fibres over natural fibres. 3. The structure below represents part of a polymer molecule: a) Draw the repeating unit and the monomer for this polymer chain. b) Is this an addition or condensation polymer?

Transcript of file · Web viewUsing the word bank provided, complete the following sentences. double,...

Page 1: file · Web viewUsing the word bank provided, complete the following sentences. double, ... Using the words; very large molecules, small molecules, monomers and polymers,

Chemistry in Society National 5

Plastics Homework

1. Using the word bank provided, complete the following sentences.

double, addition, single, condensation, unsaturated, polymerisation, saturated

a) Addition polymerisation occurs when small _____________ momomers join together.

b) During addition polymerisation the ___________ bond in each monomer breaks.

c) Polyamides are examples of _______________ polymers.

2. Plastics and fibres can be natural or synthetic.

a) What is meant by the term synthetic?b) State one advantage of synthetic fibres over natural fibres.

3. The structure below represents part of a polymer molecule:

a) Draw the repeating unit and the monomer for this polymer chain.b) Is this an addition or condensation polymer?

4. Kevlar is a condensation polymer which is used because of its strength and durability. The repeating unit of Kevlar is shown below.

Page 2: file · Web viewUsing the word bank provided, complete the following sentences. double, ... Using the words; very large molecules, small molecules, monomers and polymers,

a) Draw the structural formula of the polymer when this unit is repeated 3 times.

b) Draw the 2 monomers used to produce Kevlar.c) Is this an addition or condensation polymer?

5. Polymers can be made by addition or condensation depending on the structure of the monomer(s).

CH3CHCH2 NH2(CH2)6NH2 C2H4

HOOC(CH2)COOH CH3CH2CH2CH3

CH3CH(CH3)CH3

Identify the monomer(s) which would

a) Take part in an addition reactionb) Undergo a condensation reaction

6. A pupil had been absent when polymerisation nhad been taught. He asked you to explain it to him.

Using the words; very large molecules, small molecules, monomers and polymers,write down breifly what you would tell him.

7. Copy and complete the following table giving information about a variety of polymers.

Polymer Use Addition or

Condensation polymer

Polystyrene

Nylon

A B C

D E F

Page 3: file · Web viewUsing the word bank provided, complete the following sentences. double, ... Using the words; very large molecules, small molecules, monomers and polymers,

Poly(ethene)

Polyester

Polyamide


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