The Chemistry of a Nail

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  • Actually, no that's an example of a physical change.
  • So, Today we're going to be talking about chemical changes, chemical reaction and how they change matter!
  • So like an ice cube melting? 
  • What's the difference? 
  • A chemical change occurs whenever matter changes into an entirely different substance with different chemical properties. While a physical change is a substance that changes form but remains the same substance. 
  • Yessss!!
  • Ohhh, so would an iron nail in water that turns to rust be an example of a chemical change?
  • Okay so let's walk ourselves through this chemical reaction. Here's a nail, and heres a bowl of water.
  • We have to create a balanced equation: What're the elements we're using here?
  • Fe, O2 and H2O (Iron oxygen and water)
  • That's exactly it. So when iron, water and oxygen react they form iron (III) Hydroxide
  • 2Fe3O2 + 3H2O -->2Fe(OH)3
  • Do you see the rust on the nail now? That is a chemical change.
  • okay so now we wait and see as these elements react to form a product ...
  • Yeahh. i see the rust forming. How cool!
  • Of course!!
  • I understand it now, Thanks Mr.Goff!!
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