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Chemistry, Changes around us
Updated: 10/15/2020
Chemistry, Changes around us
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Storyboard Description

reversable and irrevarsable changes

Storyboard Text

  • Oh no!We had to use this iron for costruction, but it has started to rust
  • And it is an irrevesible change.
  • This shovel is very handy for soil digging, we need more of them. Do you know how it is made?
  • Yes, I do. The iron blade is fixed to the wooden handle by the proccess of expansion on heating , it is a reversible change
  • Uh oh!No electricity, we'll have to manage with candles
  • Do you know, melting of wax is reversible change and burning of wax is an irreversible change.
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