is burning a physical change and chemical change why
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Answer:
The burning of a substance is a chemical change because it has undergone a chemical change and forms or leaves behind ash as a residue which is a product of the process. And we all know that we cannot turn a burned object into into its original state as the change is IRREVERSIBLE. To identify a chemical change, Always notice that it always produces one product with the object that has undergone a chemical change.
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Burning of any substance is a chemical change. During burning of the substance, bonds between atoms in the reactants are broken and the atoms rearrange and form new bonds to make the products. Thus a new substance is formed after burning which is called ash. Hence, it is a chemical change.