Question

give reason
1.Not all physical change can reversed ​

Answer 1

Answer:

Because chemical changes produce new substances, they often cannot be undone. For example, you can't change ashes from burning logs back into wood. Some chemical changes can be reversed, but only by other chemical changes. For example, to undo tarnish on copper pennies, you can place them in vinegar.

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Answer 2

Answer:

the statement is particularly correct physical change can be reversed like melting of ice