Multiple choise :
(a) Which of the following is not a characteristic of a
chemical change ?
(i) It is irreversible
(ii) No net energy change is involved
(iii) New substance is formed
(iv) Involves absorbtion or liberation of energy
actually i know the ans. but didn't know the correct reason to support my ans.
please help me??????
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Answer:
It is irreversible
Explanation:
Chemical change is irreversible ex
:burning if magnesium
Physical changeis reversible ex:melting of ice
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