N4 Polymers and Novel Materials

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Presentation transcript:

N4 Polymers and Novel Materials 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Calderglen High School

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

Calderglen High School 2. SYNTHETIC means …..? answer Man-made Calderglen High School

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

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

How are polymers formed? 5. How are polymers formed? answer The small monomers join together to form large polymers Calderglen High School

The word ‘poly’ goes in front of the monomer name 6. How are polymers named? answer The word ‘poly’ goes in front of the monomer name Calderglen High School

List some uses of ceramic materials 7. List some uses of ceramic materials answer Cooking pots Electrical insulator for powerlines Calderglen High School

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 Calderglen High School

What is POLYMERISATION? 9. What is POLYMERISATION? answer The type of reaction in which many small molecules (monomers) join together to form polymers Calderglen High School

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 Calderglen High School

Give some advantages of synthetic polymers 11. Give some advantages of synthetic polymers answer Cheap, light weight, long lasting (durable/hard-wearing), insulators Calderglen High School

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 Calderglen High School

What danger is associated with burning plastics? 13. What danger is associated with burning plastics? answer Toxic / poisonous gases can be produced Calderglen High School

BIODEGRADABLE means ………. 14. BIODEGRADABLE means ………. answer Decomposed (rots) naturally by living matter Calderglen High School

What type of plastic does not soften on heating? 15. What type of plastic does not soften on heating? answer Thermosetting Calderglen High School

Calderglen High School 16. What is the monomer for POLYPROPENE* answer Propene (remove POLY from POLYPROPENE) Calderglen High School

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 Calderglen High School

Give an example of a polymer used for textiles? 18. Give an example of a polymer used for textiles? answer Polyester, Nylon, Terylene Calderglen High School

Give a special property of KEVLAR 19. Give a special property of KEVLAR answer Very strong Calderglen High School

Give some properties of ceramics. 20. Give some properties of ceramics. answer Withstand high temperatures Hard Good electrical insulators Calderglen High School