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chemical change

noun
1.
Chemistry. a usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance:
The formation of rust on iron is a chemical change.
Compare physical change.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for chemical change
Historical Examples
  • But in the boiling iron puddle a chemical change is taking place.

    The Iron Puddler James J. Davis
  • The heat is the result of chemical change or combination, and the light is the result of heat.

    Encyclopedia of Diet Eugene Christian
  • This is to work a chemical change upon them, to renovate and regenerate them, to dissolve them in its own rich fragrant substance.

  • The shock that passes over her is like the shock of chemical change.

  • Water exists in different forms without, however, undergoing any chemical change.

  • There is reason in every process; a law governing every chemical change.

  • In a mixture there is no chemical change in the molecules of the substances mixed.

  • Like growth, rather than chemical change; the wilderness was turning to iron.

    The Silent Places Steward Edward White
  • The final test for an enzyme is the chemical change it brings about in the specific substance acted on.

    The Fundamentals of Bacteriology Charles Bradfield Morrey
  • It was as if she suffered some chemical change before their eyes.

    The Portion of Labor Mary E. Wilkins Freeman
Contemporary definitions for chemical change
noun

any change from one state (gas, liquid, solid) which is accompanied by alteration of the chemical composition; any process in which one or more substances are changed into one or more different substances; cf. physical change

See physical change

Dictionary.com's 21st Century Lexicon
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