QUESTION NO. 1, 3 AND 4 .NO SPAM. DONT SEARCH FROM GOOGLE.
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1. While burning candle change in both physical and chemical way. As due to heat wax melts and alder some time it comes into its original way. But wax near the place of fire burns and turn into vapour which is irreversible.
3.Here first physical change and then chemical change occurs. Making of pot is a physical change as it can be reversed. But after it dries up and baked, it gains new properties. Thus chemical change occurs.
4. We consider growth as an chemical change as we can not get reversed into our childhood. This is also validates in plants. As food gets ripen that means it is growing day by day. It cannot be reversed into its mean structure. Therefore it is considered as chemical change.
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