An addition reaction occurs when two or more reactants combine to form a single product. This product will contain all the atoms that were present in the reactants. ... A substitution reaction occurs when an exchange of elements in the reactants takes place.
The main difference between addition and substitution reactions is that addition reactions involve the combination of two or more atoms or functional groups whereas substitution reactions involve the displacement of an atom or a functional group by another functional group.
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Answer:
An addition reaction occurs when two or more reactants combine to form a single product. This product will contain all the atoms that were present in the reactants. ... A substitution reaction occurs when an exchange of elements in the reactants takes place.
Explanation:
The main difference between addition and substitution reactions is that addition reactions involve the combination of two or more atoms or functional groups whereas substitution reactions involve the displacement of an atom or a functional group by another functional group.