Tuesday, June 01, 2010
CHEMICAL CHANGE
WHEN A PILE AMMONIUM DICHROMATE CRYSTALS IS HEATED BY A FLAME,A CHEMICAL REACTION OCCURS.HEAT,LIGHT AND GASES ARE GIVEN OFF AND MOUND OF GRAY-GREEN ASH IS LEFT BEHIND.THE ASH NOT ONLY LOOK DIFFERENT FROM THE CRYSTALS,BUT IT ALSO HAS A DIFFERENT CHEMICAL BOND OR MAKE UP.IT HAS CHANGED INTO THE SUBSTANCE CHROMIUM OXIDE.
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