Question

chemical changes are
a always irreversible b mostly irreversible c always reversible
d mostly reversible​

Answer 1

AnsweR :

a) always irreversible

ExplanatioN :

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All chemical changes are irreversible changes. Once the chemical properties of a substance are changed, it becomes another substance. Thus, it cannot return to its original state.

Chemical reactions always result in forming new substances with different molecules. It is not easy to get back the original substances. Hence, the chemical changes are permanent and irreversible.

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