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Unit 2 revision 5

5th set of revision cards - Materials used to construct our homes

QuestionAnswer
Copper is used for ... water pipes,hot water cylinders and wiring
Copper is used for water pipes and hot water cylinders because it is ... malleable, strong, has a high melting point and does not react with water
Copper is used for wiring because it is.... strong, ductile, has a high melting point and is a good conductor of electricity
Lead is used for ... flashing on roofs because it is unreactive and malleable
Steel is used to make.. supporting structures and fixings because it has a high tensile strength.
Aluminium is used in... window frames because it is resistant to corrosion, malleable, strong and light.
Polymers used in construction are... poly(ethene), poly(propene), polystyrene and PVC.
Most polymers have low melting points, which makes them... easy to mould into shapes.
Why are polymers used for electrical and thermal insulation? Because they are poor conductors of heat and electricity
Why are polymers used for pipes,guttering, containers for water and other chemicals? Because they are resistant to corrosion and waterproof
What are the properties of ceramics? hard, brittle solids with high melting points and are resistant to chemical attack.
What are the uses of ceramics? construction and decoration (bricks and tiles), pottery products (bathroom basins and toilets) and specialist industrial materials (for example, lining for furnaces and insulators on power transmission lines).
Created by: carolinemorgan
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