Flashcards
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Flashcards do conjunto (7)
- 1What is a nanometre?one thousand-millionth of a metre
- 2What is a nanoparticle?a nanoscale particle
- 3Where can you find natural nanoparticles?Volcanic ash
Ocean spray
Forest fire smoke - 4Why do nanoparticles behave/ react differently to normal sized particles?They have a large surface area compared to their volume.
The atoms on the surface tend to be more reactive than those on the centre
Materials containing nanoparticles are often highly reactive or have unusual properties. - 5Give 3 examples of nanoparticle useHouse paint
Sun cream
Tennis balls - 6Give some problems/concerns about using nanoparticles.The effect of nanoparticles on the body is difficult to predict and not easily understood and the long-terms effects on our health and well-being are quite unknown.
- 7What could we do to reduce these concerns?indicate on the label any product containing nanoparticles.
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- FlashCards sobre Sem título, criado por llama #103285 em 06-03-2015.
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