SYNTHESIS.KATIE

**In a synthesis reaction (composition reaction) two or more substances combine to form a new compound.
 * SYNTHESIS REACTIONS:**

A + X---→AX

Sentence example: Hydrogen reacts with oxygen to form di-hydrogen monoxide or water. (2H2+O2--→2H2O)

You change the sentence into an equation by just simply turning hydrogen into H2, put a plus sign for reacts, put an O2 for oxygen, an arrow going to the right for form then you put H2O for water.

_H2 + _O2--→ _H2O

You would balance the reaction by first putting a 2 in front of the H2O because you have 2 oxygens on the left then you would have to put a 2 in front of the H2 because you now have 4 hydrogens on the left.**