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chemical change occur when a substance combines with another to from a new substances call chemical synthesis.
physical change are changes affecting the from of a chemical substance but not a it's chemical composition
law of conversation of mass or principle of mass conversation states that for any system closed to all transfer of matter and energy. and mass of the system must remain constant over time
physical change are changes affecting the from of a chemical substance but not a it's chemical composition
law of conversation of mass or principle of mass conversation states that for any system closed to all transfer of matter and energy. and mass of the system must remain constant over time
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