physical change

noun Chemistry.
a usually reversible change in the physical properties of a substance, as size or shape: Freezing a liquid is a physical change.
Compare chemical change. Unabridged
Cite This Source Link To physical change's 21st Century Lexicon
Main Entry:  physical change
Part of Speech:  n
Definition:  any process involving a substance's change from one state (gas, liquid, solid) to another without alteration of the chemical composition; cf. chemical change
Example:  Freezing water is a physical change because both water and ice are H2O.
Main Entry:  physical change
Part of Speech:  n
Definition:  See chemical change's 21st Century Lexicon
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Example sentences
The sight of a lion induces physical changes that prepare a zebra to flee.
Suggesting medicine will help does result in physical changes in the brain.
The issue isn't just one that can be fixed with a small line of coding, it
  requires an actual physical change to the map models.
The only chemical and physical changes result from the heat generated.
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