ALL meanings of chemical change
chem·i·cal change
C c - noun chemical change 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. 1
- noun chemical change (chemistry) any process in which reactants are changed into products by the breaking or creation of chemical bonds. 0