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A synthesis reaction occurs when two or more molecules are joined together.

Synthesis: A synthesis reaction is when two or more simple compounds combine to form a more complicated one. These reactions come in the general form of:

A + B ---> AB

One example of a synthesis reaction is the combination of iron and sulfur to form iron (II) sulfide:

8 Fe + S8 ---> 8 FeS

You can double check by reading at this website: http://misterguch.brinkster.net/6typesofchemicalrxn.html

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Q: What reaction occurs when two or more molecules are joined together?
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