Scolder2000
Answered

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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 :)

Sagot :

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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Answer:

The answer is B.wood becomes charred and black from burning  

Explanation:

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