Question

the picture shows which type of reaction? options: combustion, single replacement, decomposition, synthesis

Explanation:

A synthesis reaction is defined as a reaction where two or more reactants combine to form a single product, following the general formula \( A + B
ightarrow AB \). In the given diagram, reactants A and B combine to form product AB, which matches the synthesis reaction pattern. Combustion involves reacting with oxygen, single replacement has a single element replacing another in a compound, and decomposition is the breakdown of a compound into simpler substances—none of these match the diagram.

Answer:

D. synthesis