Difference between chemical and physical property Difference between chemical and physical property Solution Physical properties can be measured without modifying the reactant identity and it is independent of the mass Example of Physical properties will be density, freezing point and boiling point Chemical properties are the only observed during a chemical reaction change and is dependent on mass, since we need some minimum amount of reactant to inititate the reaction to yield the final product Example of Chemical Properties will be heat of reaction (dependent on mass) .