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Which statement is correct for a physical change?

Answer and explanation

Correct answer: Chemical identity generally does not change

In a physical change, only the size, state, or form of a substance may change; its chemical identity generally remains the same. For example, melting of ice into water is a physical change because both have the formula \(H_2O\). Formation of a new substance is a feature of a chemical change, so option A is incorrect. Exam tip: if the composition remains unchanged after a change, it is generally a physical change.

Related tags

ChemistryNature Of MatterPhysical ChangeChemical IdentityClass 11Basic Concepts Of ChemistrySome Basic Concepts Of ChemistryClass 11 Mcq

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