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Crystallisation - class-VII
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What is a chemical change?
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A
Change from one substance to another new substance
💡 Explanation:
A chemical change is a process where one or more substances are converted into one or more new substances. Examples: Explosion of fireworks that produces heat, light, sound and unpleasant gases, breaking down of ozone in the ozone layer by the UV radiations.
Hence, the correct option is $B$