explain why burning of wood and cutting it into small pieces are considered as two different types of changes?
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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. Cutting of wood into small pieces is a physical change because no new substance is formed.
Burning of wood − chemical change because a new substance is formed.Whereas cutting into small pieces is a physical change because there is no change in the composition of the substance and no new substance is formed.
Only the size is reduced.Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds. For example, burned wood becomes ash, carbon dioxide, and water.
Explanation:
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