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1. What are reversible changes?
2. What are irreversible changes?
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Answer 1 : A reversible change is a change that can be undone or reversed. If you can get back the substances you started the reaction with, that's a reversible reaction. ... Examples of reversible reactions include dissolving, evaporation, melting and freezing. Eg : Melting is when a solid converts into a liquid after heating.
Answer 2 : A change is called irreversible if it cannot be changed back again. In an irreversible change, new materials are always formed.
Eg : When vinegar and bicarbonate of soda are mixed, the mixture changes and lots of bubbles of carbon dioxide are made. Burning is an example of an irreversible change.
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