1. N4 Polymers and Novel Materials1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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2. Calderglen High School1.
What is a polymer?
answer
Large molecules formed by many small molecules called monomers joining together
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3. Calderglen High School2.
SYNTHETIC means …..?
answer
Man-made
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4. Give some examples of natural polymers3.
Give some examples of natural polymers
answer
Cotton
Rubber Silk Wool Starch Cellulose
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5. Give some examples of synthetic polymers4.
Give some examples of synthetic polymers
answer
Nylon
Polyethene (polythene)
Polystyrene
PVC
Perspex
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6. How are polymers formed?5.
How are polymers formed?
answer
The small monomers join together to form large polymers
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7. The word ‘poly’ goes in front of the monomer name6.
How are polymers named?
answer
The word ‘poly’ goes in front
of the monomer name
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8. List some uses of ceramic materials7.
List some uses of ceramic materials
answer
Cooking pots
Electrical insulator for powerlines
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9. What is special about the polymer hydrogel? What is it used for?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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10. What is POLYMERISATION?9.
What is POLYMERISATION?
answer
The type of reaction in which many small molecules (monomers) join together to form polymers
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11. What is a THERMOPLASTIC polymer?
10.
What is a THERMOPLASTIC polymer?
answer
A thermoplastic polymer is one which softens on heating and can be reshaped
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12. Give some advantages of synthetic polymers
11.
Give some advantages of synthetic polymers
answer
Cheap, light weight, long lasting (durable/hard-wearing), insulators
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13. Why is polystyrene good for making drinking cups
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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14. What danger is associated with burning plastics?
13.
What danger is associated with burning plastics?
answer
Toxic / poisonous gases can be produced
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15. BIODEGRADABLE means ……….
14.
BIODEGRADABLE means ……….
answer
Decomposed (rots) naturally by living matter
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16. What type of plastic does not soften on heating?
15.
What type of plastic does not soften on heating?
answer
Thermosetting
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17. Calderglen High School
16.
What is the monomer for
POLYPROPENE*
answer
Propene
(remove POLY from POLYPROPENE)
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18. Give some disadvantages of synthetic fibres?
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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19. Give an example of a polymer used for textiles?
18.
Give an example of a polymer used for textiles?
answer
Polyester, Nylon, Terylene
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20. Give a special property of KEVLAR
19.
Give a special property of KEVLAR
answer
Very strong
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21. Give some properties of ceramics.
20.
Give some properties of ceramics.
answer
Withstand high temperatures
Hard
Good electrical insulators
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