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8 October, 23:27

Which of the following is a chemical change?

breaking a pencil

freezing water

rusting of an iron nail

liquid nitrogen becoming a gas

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Answers (1)
  1. 9 October, 03:08
    0
    Good evening,

    You must keep in mind that physical changes are changes that can be reversed and that chemical changes are irreversible.

    Rusting of an iron nail is a chemical change because it is irreversible.
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