# What are some examples of synthesis reactions?

May 12, 2014

A synthesis reaction, also known as a composition reaction, is characterized by the reaction of two or more substances chemically joining to form a single product.

Here are three examples

Magnesium metal reacts with oxygen to produce magnesium oxide

$2 M g + {O}_{2} \to 2 M g O$

In this next example, sodium reacts with chloride to form table salt.

$2 N a + C {l}_{2} \to 2 N a C l$

In the examples above, two different elements react to form a compound.

In the last example, two different compounds react to form a new compound which is a single product.

Calcium oxide reacts with sulfur dioxide to produce calcium sulfite.

$C a O + S {O}_{2} \to C a S {O}_{3}$