❤I've been used to reserving myself. Only by doing this won't I get hurt when I'm leaving.❤
❤No matter what have happened and whether you are ready or not, every next moment is gonna be a brand new start.❤
❤Whatever you do, remember that you do it for yourself, then you will not complain.❤
❤If you get tired one day, you will see my smile as long as you turn around.❤

Wednesday, 9 November 2011

Unit 5 Materials - Note

  • Objects can be classified according to the materials they are made of.
  • Different materials have different properties.
  • Non-metals are generally good insulators of heat and electricity.
  • A good conductor of heat is also a good conductor of electricity.
  • Materials can be classified based on their abilities to allow light to pass through.
  • Materials can be transparent, translucent and opaque.
  • Suitable materials can be used to keep hot things warm and cold things cool and chill.
  • Materials chosen to make objects are based on their properties.
  • Some materials can float and absorb water. Some can be stretched.
  • Man-made materials come from natural materials.
  • Natural materials are limited in supply. 

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