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If only the shape of a substance changes in a process and no new substance is formed, what type of change is it called?

Answer and explanation

Correct answer: Physical change

The governing criterion is whether the chemical composition changes. In a physical change, a substance may be cut, bent, crushed, reshaped, or changed in state while its composition remains unchanged. Since only the shape changes and no new substance forms, option A is correct. A chemical change forms substances with new compositions; redox and precipitation are particular chemical processes and therefore do not describe this situation.

Related tags

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

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