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9
1.
What is a polymer?
answer
Large molecules formed by
many small molecules called
monomers joining together
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2.
SYNTHETIC means …..?
answer
Man-made
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3.
Give some examples of natural
polymers
answer
Cotton
Rubber
Silk
Wool
Starch
Cellulose
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4.
Give some examples of synthetic
polymers
answer
Nylon
Polyethene (polythene)
Polystyrene
PVC
Perspex
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5.
How are polymers formed?
answer
The small monomers join
together to form large
polymers
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6.
How are polymers named?
answer
The word ‘poly’ goes
in front
of the monomer name
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7.
List some uses of ceramic materials
answer
Cooking pots
Electrical insulator for powerlines
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8.
What is special about the polymer
hydrogel? What is it used for?
answer
Hydrogel – absorbs water – good for
nappies and contact lenses
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9.
What is POLYMERISATION?
answer
The type of reaction in
which many small
molecules (monomers)
join together to form
polymers
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10.
What is a THERMOPLASTIC
polymer?
answer
A thermoplastic
polymer is one which
softens on heating and
can be reshaped
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11.
Give some advantages of synthetic
polymers
answer
Cheap, light weight, long lasting
(durable/hard-wearing), insulators
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12.
Why is polystyrene good for making drinking
cups
answer
Polystyrene
Non-conductor of heat, lightweight
- good for hot drinks cups
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13.
What danger is associated with
burning plastics?
answer
Toxic / poisonous gases
can be produced
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14.
BIODEGRADABLE means ……….
answer
Decomposed (rots)
naturally by living matter
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15.
What type of plastic does not soften on heating?
answer
Thermosetting
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16.
What is the monomer for
POLYPROPENE*
answer
Propene
(remove POLY from POLYPROPENE)
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17.
Give some disadvantages of
synthetic fibres?
answer
Don’t feel or look as good,
finite, non-biodegradable (won’t rot),
burn to give toxic fumes
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18.
Give an example of a polymer used
for textiles?
answer
Polyester, Nylon,
Terylene
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19.
Give a special property of KEVLAR
answer
Very strong
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20.
Give some properties of ceramics.
answer
Withstand high temperatures
Hard
Good electrical insulators
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