Explain why the explosion of a firework is said to be a chemical chang.
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Explosion of a cracker is a chemical change because the explosive reactants are transformed into gaseous products along with heat, light and sound which cannot be reversed. Hence, it is a chemical change.
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Explosion of fireworks is a chemical change because it is the oxidation, or combustion, of some metal salts with charcoal and sulfur or similar to..
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