Is combustion is a physical or chemical change?
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Generally those changes are not reversible. Children may be familiar with combustion reactions such as burning candles, wood or other fuel. But it is not always easy to see exactly what has happened during a chemical change. ... In chemical changes as in physical changes matter cannot disappear nor appear from nowhere.
2023-04-24 15:47:59
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Generally those changes are not reversible. Children may be familiar with combustion reactions such as burning candles, wood or other fuel. But it is not always easy to see exactly what has happened during a chemical change. ... In chemical changes as in physical changes matter cannot disappear nor appear from nowhere.