Define and illustrate chemical change
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The change in which the nature n chemical properties of a sustance completely changes is called chemical change. It is also called irreversible change.
eg. burning of a paper, chapattis from dough...
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the change in which the substance get change from its previous form.
for example : before burning of a candle you can see it but after it burn you could only see melted wax, our growth is also a chemical change
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