Question

Explain why burning of wood and cutting it into small pieces
considered as two different types of changes.
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Answer 1

Explanation:

In burning of wood, new substances are formed and hence it is a chemical change. While cutting the wood into small pieces no new substance is formed, thus it is a physical change. Hence, burning of wood and cutting it into small pieces are considered as two different types of changes

Answer 2

Answer:

Because burning of wood is a chemical change while cutting of wood is a physical change.