in which type of chemical reaction do two or more substances combine to form one substance?\no synthesis\no…

in which type of chemical reaction do two or more substances combine to form one substance?\no synthesis\no decomposition\no single replacement\no double replacement
Answer
Brief Explanations:
In a synthesis reaction, two or more substances combine to form a single - substance. Decomposition is the opposite (a single substance breaks down into two or more). Single - replacement involves one element replacing another in a compound, and double - replacement involves the exchange of ions between two compounds.
Answer:
synthesis