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What does not necessarily change when state of matter changes?

Answer and explanation

Correct answer: Chemical nature

A change of state, such as ice melting into water or water changing into vapour, is a physical change. The chemical nature or composition of the substance remains the same; only the arrangement, separation, and motion/energy of its particles change. Therefore, option A is correct. Shape generally changes during a change of state because a solid has a definite shape, whereas liquids and gases do not. Exam tip: If no new substance is formed, the change is generally physical.

Related tags

States Of MatterPhysical ChangeChemical NatureParticle MotionInterparticle DistanceNature Of MatterSome Basic Concepts Of ChemistryChemistry

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