When a copper compound burns, it undergoes a chemical change. Burning typically involves a reaction with oxygen (combustion), which alters the chemical composition of the substance. For example, if copper(II) sulfate is heated, it decomposes into copper(II) oxide and sulfur trioxide, resulting in a new substance being formed. Thus, the process of burning a copper compound is indicative of a chemical change rather than a physical property or physical change.
copper compound burns physical or chemical property or physical or chemical change
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