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19 October, 16:19

Which of the following involve chemical changes?

1. a carrot being digested

2. a piece of wood burning

3. a piece of chocolate melting

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Answers (1)
  1. 19 October, 16:48
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    1 and 2 are both chemical changes because they can not be reversed while 3 is only changing states and can be reversed by freezing the melted chocolate.
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