Changes Around Us
1)Which of the following is an example of a reversible change?
  
2)If the picture is drawn using a pencil, then it can be erased, hence change can be reversed.
  
3)occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances.
4)changes are used to separate mixtures into their component compounds. 
5)Changes around us could be grouped as
  

  


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