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Why burning of water is a physical change and boiling of egg is a chemical change​

Answer»

First of all, BRO, that's boiling of water and not burning (lol) .Boiling of water is a physical change because in a physical change only the physical properties LIKE the temperature or STATE of the matter changes. In this case, the state of the matter, i.e. water changes to gas / vapour. There is no change in the chemical properties of water. It still remains H2O. We can get back the water by COOLING the vapour. So physical changes are reversible.Boiling of egg is a chemical change because it is irreversible.



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