Question

chopping wood is a chemical change. why?​

Answer 1

Burning of wood is a chemical change as new substances which cannot be changed back (e.g. carbon dioxide) are formed. For example, if wood is burned in a fireplace, there is not wood anymore but ash. ... Physical changes are a change in which no new substances are formed, and the substance which is changed is the same.

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Answer 2

Answer:

Chopping wood is a physical change. When you chop wood into smaller pieces, it is still wood, it's just in smaller pieces.

Burning wood however is a chemical change because once the wood is burned it is no longer wood it is ash and CO2.

burning of wood is a chemical change

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