Page 3 - Note Physical and chemical change
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  Difference between physical and chemical changes

                                     Physical change                         Chemical change
                    1.   Temporary, can be reversed               Permanent ,cannot be reversed
                    2.   No new substance is formed, chemical     New substance is formed, chemical
                         composition remain unchanged.            composition changed.
                    3.   Individual properties are retained       Individual properties are not retained
                    4.     Example : cutting of wood              Example : burning of wood
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