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Which of these is a demonstration of a chemical change? A.ice melting into water B.wood becomes charred and black from burning C.water evaporates from a sugar solution, leaving behind sugar crystals D.a balloon suddenly popping Please explain the answer :)
The answer would be B. Wood becomes charred and black from burning. This is because A and C are both simply water changing state, therefore these are both physical changes. D is simply air escaping so there is no chemical change. In B, however, the wood is being burned in a combustion reaction which causes a chemical change.
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