1. Make the new product
2. Look at the charges on the table to determine if subscripts are needed.
3. If needed, use coefficients to balance out the reaction
a. Always check for diatoms elements in decomposition and single replacement reactions
b. The list of the diatomics are at the end of this document.

18. A synthesis reaction of Aluminum and Sulfur
Al + S à

19. The decomposition of Potassium oxide
Li2Oà

20. The combustion of propane gas
C3H8 + O2à

21. A single replacement reaction of Potassium metal and Silver chloride.
K + AgCl à

22. A double replacement reaction of Sodium sulfate and Potassium iodide
Na2SO4 + KI à

Ion Charges table
+1 ions +2 ions +3 ions -1 ions -2 ions
Na Mg Al I O
Li Ca ----- Cl S
K ----- ----- ------ SO4
Ag ------ ------ ------- ---------

List of Diatomic Elements
O2
Cl2
H2
Br2
N2
I2

F2