why are chemical changes permanent and irreversible
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Mostly a new substance is not formed in areversible change. For example: folding of paper, elongation of spring etc. Irreversible change: The change which is almostpermanent and cannot be undone by any physical or chemical means is called anirreversible change. Some new substances are formed in irreversible change
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new substance formed is irreverasible because of the change in their chemical properties which cannot be temperory
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