What type of change takes place when coal is formed? (Physical /Chemical Change or Reversible /Irreversible Change
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It's a chemical change because when animals fossilise when they die they form fossil fuels and coal is one of them. In chemical change new substances are formed and the change is irreversible so in formation of coal new substances are formed and it's not reversible means we can not get the original form again.
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chemical change
irreversible change
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