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C1b topic 8 (a) Smart materials and nano-technology

C1b topic 8 (a) Smart materials and nano-technology. You will find out: What smart materials can do What nanotechnology is all about The uses of teflon, kevlar, goretex, polyurethene. Use this quiz as a start point to talk about smart materials.

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C1b topic 8 (a) Smart materials and nano-technology

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  1. C1b topic 8 (a) Smart materials and nano-technology You will find out: • What smart materials can do • What nanotechnology is all about • The uses of teflon, kevlar, goretex, polyurethene

  2. Use this quiz as a start point to talk about smart materials • http://www.bbc.co.uk/apps/ifl/schools/gcsebitesize/science/quizengine?quiz=edexcelsmart_materials;templateStyle=science

  3. Class discussion • Produce a spider diagram about smart and designer materials, their properties and uses

  4. Nano technology • Nanoparticles range in size from about 100 nm down to about 1 nm. They are typically the size of small molecules and are far too small to see with a microscope. • Working with nanoparticles is called nanotechnology. Try a quiz: http://www.bbc.co.uk/apps/ifl/schools/gcsebitesize/science/quizengine?quiz=edexcelnanotechnology&templateStyle=science

  5. Past paper questions 1. Dan is wearing a hat made of Thinsulate, which is a very good insulator. The main purpose of the hat will be to A keep Dan dry if it rains B reduce heat loss from Dan’s head C keep flies away D make Dan look good

  6. 2. Dan’s boots have a Sympatex lining. This is used because, in wet snow, it is important that his boots are A waterproof B slippery C heavy D colourful

  7. 3. Dan is wearing a jacket made from Gore-Tex. The jacket will • A keep him dry if it rains • B keep him cool in hot weather • C allow sunlight to reach his skin • D repel insects • 4. Gore-Tex is said to be ‘breathable’. • This means it • A allows oxygen to pass in and carbon dioxide to pass out • B allows oxygen to pass out and carbon dioxide to pass in • C allows water vapour to pass in but stops water passing out • D allows water vapour to pass out but stops water passing in

  8. 5. The poles of Dan’s tent are made from a material containing carbon fibres. • Carbon fibres make the poles stronger and lighter in weight. • The advantage of these poles, compared with steel poles, is that they make the tent • A waterproof • B easier to carry • C more comfortable to sleep in • D breathable

  9. 6. Dan’s drink is in an aluminium can. He knows that it is important to recycle the empty can. It is important to recycle aluminium cans because A some cans will be refilled B aluminium is a very rare metal C aluminium rusts slowly D recycling saves natural resources

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