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Dictionary » C » Chemical reaction Chemical reactionDefinition noun, plural: chemical reactions A process in which one or more substances (reactants) are chemically changed into one or more new substances (products). Chemical changes may involve motion of electrons in the forming and breaking of chemical bonds.
Common chemical reactions are isomerization, syntheses, chemical decomposition, substitution, acid-base reactions, redox reactions, combustions, polymerization, ionization, hydrolysis, etc.
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