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In which example does only a change of state occur and no new substance form?

Answer and explanation

Correct answer: Water freezing into ice

The governing concept is the difference between physical and chemical change. When water freezes, its particles become arranged in a solid form, but its chemical composition remains H₂O. Thus only the state changes from liquid to solid and no new substance is produced, making option A correct. Rusting, curdling, and burning involve chemical changes that produce substances with new properties.

Related tags

ScienceClass 10Chemical ReactionsPhysical ChangeState ChangeChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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