❤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.❤

Saturday, 5 November 2011

Unit 5 Materials - Lesson 9

Lesson 9 Rusting

  • This car is made of iron. This part of the car has rusted. 

  • The nail with a rusted surface is dull and rough. When you scrap it off, the rusted surface will blister off. The clean non-rusted surface stays shiny. Rusted surfaces are ugly. 

There are different ways of preventing iron from rusting. We can keep it away from air and water. This is done by:

  •  Greasing 

  • Plastic coating

  •  Spray painting

  • Tin plating 

  • Oiling 

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