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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.
With chemical properties the chemical identity of the substance is changed, this is not the case with physical properties. With chemical properties the structure of the material changes, while the structure does not change in the case of physical properties. A chemical reaction occurs before a chemical property becomes evident, while no chemical reaction is needed for a physical property to become visible. Chemical properties, unlike physical properties, can be used to predict how substances will react. Table comparing physical and chemical properties