Which of these represents a chemical change?
I: Melting of a sugar cube
II: Burning of a sugar cube
III: Dissolving of a sugar cube in water
IV: Crystallising of pure sugar from impure sugar
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rning of a sugar cube is chemical change :)
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Burning of sugar cube is chemical change.Because burning means combustion which is a chemical process.
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melting of sugar cube is physical change
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