Chemical changes which are irreversible
Answers
Answer:
Burning of Paper is an example of Chemical change
Answer:
Irreversible changes
A change is called irreversible if it cannot be changed back again.
In an irreversible change, new materials are always formed. Sometimes these new materials are useful to us.
Heating
Heating can cause an irreversible change. For example you heat a raw egg to cook it. The cooked egg cannot be changed back to a raw egg again.
Mixing
Mixing substances can cause an irreversible change. For example, when vinegar and bicarbonate of soda are mixed, the mixture changes and lots of bubbles of carbon dioxide are made. These bubbles and the liquid mixture left behind, cannot be turned back into vinegar and bicarbonate of soda again.
Burning
Burning is an example of an irreversible change. When you burn wood you get ash and smoke. You cannot change the ash and smoke back to wood again.
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