Explain how cutting and burning of wood are two different types of changes.
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Answer:
cutting of wood is a physical change as no new substance is formed.
burning of wood is a chemical change as new substance like carbon dioxide ,fire,etc are formed.
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Answer: Burning of wood is is a chemical change whereas cutting wood is a physical change.
Explanation: As there is no change chemically seen when wood is cut, it is a physical change. As burning of the wood causes change in the wood chemically and the burnt wood cannot be changed back into wood again, it is a chemical change.
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