physical changes

Matter state shifts

Physical changes alter a substance's form or appearance without changing its chemical composition.

Ice melting into water, paper being torn, or sugar dissolving are physical changes—the molecules remain the same even as shape, size, or state shifts.

The term contrasts with chemical changes, where new substances form: Rusting is a chemical change, but crushing a can is physical.

Opposites
type of matter transformation

physical changeschemical changes

Molecular rearrangements forming new substances

chemical reactions · nuclear reactions · biochemical reactions · combustion · oxidation

tangibility of change

physical changesbehavioral changes

Alterations in conduct

social changes

Family

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