Question

example of irreversible changes and explain

Answer 1

The cooked egg cannot be changed back to a raw egg again. 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. ... Burning is an example of an irreversible change.



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Burning: When we burn a piece of paper or wood, it turns to ash and smoke. We cannot obtain paper and wood from the ash again.
Cooking: We use heat for cooking, right? Once we cook our eggs, we cannot uncook them. Therefore, cooking is an irreversible change.
Rusting of iron: You must have seen rusting of iron. When water vapour (humidity) comes in contact with the iron, they react. Therefore, iron rusts and once this happens, we cannot reverse it.

Answer 2

Burning of wood

it cannot be changed into original wood again

As it is converted into ash