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Nat 4/5 Calderglen High School 1111 2222 3333 4444 5555 6666 7777 8888 9999 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 * Information available Calderglen.

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Presentation on theme: "Nat 4/5 Calderglen High School 1111 2222 3333 4444 5555 6666 7777 8888 9999 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 * Information available Calderglen."— Presentation transcript:

1

2 Nat 4/5 Calderglen High School

3 * Information available Calderglen High School

4 What is a polymer? Large molecules (macromolecules) formed by many small molecules called monomers joining together answer 1. Calderglen High School

5 SYNTHETIC means …..? Man-made ( by the chemical industry ) answer 2. Calderglen High School

6 Give some examples of natural polymers Cotton Rubber Silk Wool Starch Cellulose answer 3. Calderglen High School

7 Give some examples of synthetic polymers Nylon Polyethene (polythene) Polystyrene PVC Perspex answer 4. Calderglen High School

8 Give examples of thermosetting polymers Bakelite Formica answer 5. Calderglen High School

9 From which RAW MATERIAL do we obtain the chemicals used to make most plastics and synthetic fibres? CRUDE OIL* answer 6. Calderglen High School

10 What type of hydrocarbons are the monomers for addition polymers? ALKENES* answer 7. Calderglen High School

11 How are addition polymers formed? The C = C in the monomers open and the monomers join (ADD) together answer 8. Calderglen High School

12 How are polymers named? The word ‘poly’ goes in front of the monomer name answer 9. Calderglen High School

13 What is a condensation polymer? A polymer made when two monomers join together with the loss of a small molecule (usually water) answer 10.

14 Calderglen High School How are the small unsaturated molecules used to make addition polymers obtained from crude oil? Fractional distillation answer followed by Catalytic cracking 11.

15 Calderglen High School What is addition polymerisation? answer The type of reaction where monomers with C=C double bonds join to form polymers through a process which involves the breaking of the double bond 12.

16 Calderglen High School What is POLYMERISATION? answer The type of reaction in which many small molecules (monomers) join together to form polymers 13.

17 Given the addition polymer how would you draw the monomer? 1.Find the repeating unit 2.Redraw with a C = C 3.Remove the side bonds answer 14. Calderglen High School

18 What is a THERMOPLASTIC polymer ? A thermoplastic polymer is one which softens on heating and can be reshaped answer 15. Calderglen High School

19 Give some advantages of synthetic polymers Cheap, light weight, long lasting (durable/hard-wearing), insulators answer 16. Calderglen High School

20 Give some examples of how the PROPERTIES of plastics are related to their USES PVC Non-conductor of electricity, flexible Insulating electrical cables Polystyrene Non-conductor of heat, lightweight Hot drinks cups answer 17. Calderglen High School

21 What danger is associated with burning plastics? Toxic gases can be produced answer 18. Calderglen High School

22 BIODEGRADABLE means ………. Decomposed (rots) naturally by living matter answer 19. Calderglen High School

23 Name 3 toxic gases that could be given off by a burning plastic Carbon monoxide (from almost any plastic) Hydrogen chloride (from PVC) Hydrogen cyanide (from polyurethane) answer 20. Calderglen High School

24 What type of plastic does not soften on heating? Thermosetting answer 21. Calderglen High School

25 Draw part of a poly(ethene) molecule showing 3 ethene monomers joined together answer HHHHHH HHHHHH CCCCCC 22. Calderglen High School

26 Draw part of a poly(propene) molecule showing 3 propene monomers joined together answer CH 3 H HHHHHH CCCCCC H H 23. Calderglen High School

27 Draw the repeating unit for answer CH 3 H HH CC POLYPROPENE* 24. CH 3 H HHHHHH CCCCCC H H Calderglen High School

28 Give some disadvantages of synthetic fibres? Don’t feel or look as good, finite, non-biodegradable (won’t rot), burn to give toxic fumes answer 25. Calderglen High School

29 Recycling The type of plastic is indicated by a code as shown opposite Calderglen High School

30 A hydrocarbon with a carbon to carbon double bond ALKENE Calderglen High School

31 Breaking up long chain hydrocarbons to give smaller ones some of which have carbon to carbon double bonds CRACKING Calderglen High School

32 POLYPROPENE CH 3 H HHHHHH CCCCCC H H Calderglen High School

33 FOSSIL FUEL CRUDE OIL Mixture of hydrocarbons Calderglen High School

34 Give an example of a synthetic condensation polymer? Polyester answer 26. Calderglen High School

35 Give a special property of polyethenol. Water soluble answer 27. Calderglen High School

36 Give a special property of KEVLAR Very strong answer 28. Calderglen High School

37 Give a special property of BIOPOL BIODEGRADABLE answer 29. Calderglen High School

38 Give some properties of ceramics. Withstand high temperatures Hard Good electrical insulators answer 30. Calderglen High School

39 List some uses of ceramic materials Cooking pots Electrical insulator for powerlines answer 31. Calderglen High School

40 List some new materials and their uses Hydrogel – absorbs water – nappies (or any reasonable example) answer 32. Calderglen High School

41 Polyesters can be linear or…… (cured 3D) RESIN answer 33. Calderglen High School

42 What could you use a polyester fibre for? Clothing answer 34. Calderglen High School

43 What could you use a polyester resin for? Jewellery answer 35. Calderglen High School

44 Complete the table. answer 36. Calderglen High School NameTypeKey featuresUse PolyethenolAdditionWater soluble Condensation polyamide Very strong Bullet proof vests etc.. BiopolCondensation polyester Garden mulch bags Hospital laundry bags Kevlar Biodegradable


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