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Britiani. Chemical change is any change that results in the formation of new chemical substances. At the molecular level, chemical change involves making or breaking of bonds between atoms.
Chemical change: These are the changes in which chemical properties of substances are changed and new substances are formed . (a) Charring of sugar of heating (b) Burning of paper. 5. Characteristics of physical changes: 1  No new substances are formed.  Products are identical to the reactants.