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Physical and Chemical Changes
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09/07/2021 1:05 pm
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Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.
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09/07/2021 1:06 pm
Burning of wood is a chemical change because in burning new substances are formed as
Wood + Oxygen → Charcoal + Carbon dioxide + Heat + Light
But cutting it into small pieces is physical change because no new substance is formed. We can only reduce the size of wood.