The Chemical change reference article from the Simple Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Chemical change

A chemical change (chemical reaction) is a change in which one or more new substances are formed. Burning of wood is a chemical change as new substances (e.g. carbon dioxide, water vapour) are formed. Other examples: burning of candle, rusting of iron.

Compare: Physical change

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