1. Predicting the Products for Single Replacement Reactions

2. Single Replacement Reactions
A single element takes the place of a less active element in a compound.
Reactants are composed of a single element and a compound.
AB C  CB A
Diatomic Atoms: atoms that are so reactive that they do not exist on their own in nature and must be written as bonded to themselves.
H2, N2, F2, O2, I2, Cl2, Br2

3. To Write the Formula for the Products:
Look at the single element. Is it a metal or non-metal?
Ex: NaBr Cl2 
Find the matching metal/non-metal in the compound. These are the 2 elements that will switch places.
Ex: NaBr Cl2 
Write the single elements with the other element in the compound.
The subscripts only transfer IF in a polyatomic!
Ex: NaBr Cl2 

4. Write a plus sign followed by the replaced element.
If it is a non-metal: it will be a diatomic atom so it needs a 2 subscript.
If it is a metal: it is only one atom of that element.
Ex: NaBr Cl2 
Go back to your compound. Find the charges of the elements in the compound.
Ex: NaBr Cl2 
Balance the charges.
Ex: NaBr Cl2 
Balance the equation.

5. Examples
Zn(NO3) Mg 
LiNO Fe3+ 