Question

explain why burning of wood and cutting of wood into smaller pieces are considered as two different type of​

Answer 1

Answer:

The burning of wood leads to the formation of new substances like ash(carbon), carbon dioxide gas, water vapour, heat and light. This change is irreversible and hence a chemical change. While cutting wood into smaller pieces is a physical change as there is no change in the original composition of wood.

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Answer 2

Answer:

Burning of wood is a chemical change while cutting of wood is a physical change because during burning, new substances are formed. After burning, we cannot get original substance, (i.e. wood) back.

Explanation:

When wood is cut into firewood, this is a physical change. The composition of the wood stays the same. In a physical change, the substance usually can be changed back into its original form.