Condensation Polymers

Question 1

What is addition polymerisation

Answer 1

Under the right conditions, molecules containing carbon-carbon double bonds can join together and produce very long chains

Part of the double bond is broken and the electrons in it are used to join to a neighbouring molecule.

Describes the situation where many monomers jin together to make a single long polymer chain

Question 2

Give that 3 things that change as a monomer changes into a polymer

Answer 2

Monomer = double bond s
Polymer = single bonds

Monomers are individual molecules

Ethene = gas
Polythene = solid

Question 3

When drawing polymerisation always make sure that all carbs are drawn in a single……………………….

Answer 3

Horizontal line

Question 4

Give the 3 steps from monomer to polymer when drawn

Answer 4

Monomer
Repeat Unit
Polymer

Question 5

What is the repeat unit

Answer 5

No double bonds

Jazz hands

Question 6

Draw polyethene

Answer 6

```H H
(-C-C-) n
….H..H

Question 7

What is polytetraflouroethene

Answer 7

2 carbons with 4 florins coming off instead of hydrogen

Question 8

Give some good things about addition polymers

Answer 8

Cheap to make (readily available oil)

Strong compared to their weight

Question 9

Give some problems with addition polymers

Answer 9

Inert (unreactive) because they have strong C-C bonds

ard to dispose of since they are not easily broken down by bacteria in the environment

Important that plastics are recycled

Question 10

Give some uses of polyethene

Answer 10

Low density
- Thin film (bags)

High Density

• Plastic bottles
• Crates
• Buckets
• Pipes

Question 11

Give some uses of polypropylene

Answer 11

Ropes + cartes

Medical equipment

Question 12

Give some uses of polychloroethene

Answer 12

Water pipes

Replacement windows

Don’t conduct electricity so can be used as insulators to coat wires

Question 13

Give some uses for polytetraflouroethene

Answer 13

Non stick coating for pots and pans

Very unreactive

Question 14

What is the fictional group of an alcohol

Answer 14

-OH

Question 15

What is the fictional group of an acid

Answer 15

COOH

Double bond C

Question 16

Ethanol + Propanoic acid =

Answer 16

Ethypropanoate + water

Question 17

What are condensation polymers

Answer 17

Formed from 2 different monomers which join together alternately.

Where each bind forms, a small molecule such as water or hydrogen chloride is lost

When the two monomers are used as a diol and a dicarboxylic acid a polyester is formed

Question 18

What is a diol

Answer 18

An alcohol with two -OH functional groups at each end

Question 19

What is a dicarboxylic acid

Answer 19

A carboxylic acid with two -COOH functional groups, one at each end

Question 20

Give the structural formula for Propane-1,3-diol

Answer 20

CH2OH, CH2, CH2OH

Question 21

Give the structural formula of hexane-1,6-dioic acid

Answer 21

HOOC,CH2,CH2,CH2, CH2, COOH

Question 22

Why does combustion in a car engine produce nitrogen oxide

Answer 22

Nitrogen oxide can only be produced at very high temperatures

Question 23

How does the combustion of hydrocarbon fuels result in the formation of sulphur dioxide

Answer 23

Fossil fuels contain a small amount of sulphur, when the fuel is burnt the sulphur is released and reacts with oxygen producing it

S + O2 = SO2

Question 24

How is acid rain formed

Answer 24

When oxygen and water in the atmosphere react with sulphur dioxide to produce sulphuric acid or with various oxides of Nitrogen to produce nitric acid

Question 25

What does inert mean

Answer 25

Very unreactive

Question 26

What are polymers inert

Answer 26

Strong covalent bonds