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CHEMICAL CHANGES

PHYSICAL CHANGES

COMBUSTION

FERMETATION

OXIDATION

THIS IS A FAST OXIDATION THAT OCCURS WHEN A SUBSTANCE CALLED FUEL COMBINES WITH OXYGEN AND BURNS

THE SHAPE OR FORM CHANGES BUT THE MASS AND VOLUME STAY THE SAME

MATTER IS TRANSFORMED INTO A NEW SUBSTANCE

THIS CHEMICAL REACTION OCCURS IN THE ABSENCE OF OXYGEN AND BY THE ACTION OF VARIOUS LIVING THINGS

THIS IS A CHEMICAL REACTION THAT OCCURS WHEN A SUBSTANCE COMBINES WITH OXYGEN IN THE AIR TO FORM A NEW SUBSTANCE CALLED RUST