1. 3 – 4 Polymers and Novel Materials1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
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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. Give some properties of ceramics.5.
Give some properties of ceramics.
answer
Withstand high temperatures
Hard
Good electrical insulators
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7. Calderglen High School6.
From which RAW MATERIAL do we obtain the chemicals used to make most plastics and synthetic fibres?
answer
CRUDE OIL
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8. Give a special property of BIOPOL7.
Give a special property of BIOPOL
answer
BIODEGRADABLE
So breaks down naturally
Used in garden compost bags
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9. How are polymers formed?8.
How are polymers formed?
answer
The small monomers join together to form large polymers
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10. The word ‘poly’ goes in front of the monomer name9.
How are polymers named?
answer
The word ‘poly’ goes in front
of the monomer name
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11. List some uses of ceramic materials
10.
List some uses of ceramic materials
answer
Cooking pots
Electrical insulator for powerlines
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12. List some new materials and their uses
11.
List some new materials and their uses
answer
Hydrogel – absorbs water – nappies (reduce nappy rash)
Polyethenol – water soluble – hospital laundry bag(infection control)
Kevlar – very strong – bullet proof vest (protection)
(or any reasonable example)
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13. 12.
What does soluble mean?
answer
Soluble means that a substance can be dissolved
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14. What is POLYMERISATION?
13.
What is POLYMERISATION?
answer
The type of reaction in which many small molecules (monomers) join together to form polymers
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15. Calderglen High School
14.
What is a solute?
answer
A solute is a substance which can be dissolved
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16. What is a THERMOPLASTIC polymer?
15.
What is a THERMOPLASTIC polymer?
answer
A thermoplastic polymer is one which softens on heating and can be reshaped
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17. What danger is associated with burning plastics?
18.
What danger is associated with burning plastics?
answer
Toxic gases can be produced
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18. Give some advantages of synthetic polymers
16.
Give some advantages of synthetic polymers
answer
Cheap, light weight, long lasting (durable/hard-wearing), insulators
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19. Calderglen High School
17.
Give some examples of how the PROPERTIES of plastics are related to their USES
answer
PVC
Non-conductor of electricity, flexible
Insulating electrical cables
Polystyrene
Non-conductor of heat, lightweight
Hot drinks cups
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20. BIODEGRADABLE means ……….
19.
BIODEGRADABLE means ……….
answer
Decomposed (rots) naturally by living matter
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21. Name 3 toxic gases that could be given off by a burning plastic
20.
Name 3 toxic gases that could be given off by a burning plastic
answer
Carbon monoxide (from almost any plastic)
Hydrogen chloride (from PVC)
Hydrogen cyanide (from polyurethane)
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22. What type of plastic does not soften on heating?
21.
What type of plastic does not soften on heating?
answer
Thermosetting
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23. Calderglen High School
22.
What is a solvent?
answer
A solvent is a substance which can be used to dissolve something
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24. Calderglen High School
23.
Which of the following substances will dissolve in water? Salt, wax, sugar, oil
answer
Salt, sugar
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25. Calderglen High School
24.
What is the monomer for
POLYPROPENE
answer
Propene
(take off the poly from the name)
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26. Give some disadvantages of synthetic fibres?
25.
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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27. Give an example of a polymer used for textiles?
26.
Give an example of a polymer used for textiles?
answer
Polyester, Nylon, Terylene
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28. Give a special property of polyethenol and how it benefits us.
27.
Give a special property of polyethenol and how it benefits us.
answer
Water soluble
Used in hospital laundry bags
Helps with infection control
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29. Give a special property of KEVLAR and how it benefits us.
28.
Give a special property of KEVLAR and how it benefits us.
answer
Very strong
Used in crash helmets / bullet proof vests
Protection from injury
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