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Is combustion is a physical or chemical change?

Harper Wilson | 2023-04-20 15:47:59 | page views：1622
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Lucas Clark

Works at the International Organization for Migration, Lives in Geneva, Switzerland.
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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Lily Adams

QuesHub.com delivers expert answers and knowledge to you.
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.
Particle Theory - physical and chemical change
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