1. Chemical Reactions

2. Balancing
Law of Conservation of Matter: Cannot destroy or create matter (the beginning has to equal the end).
Must compare the number of atoms on both sides and use coefficients to balance (trial and error).
Example:
Na Cl2  NaCl

3. Synthesis Marriage: 2/more molecules combine to form one new compound.
H O2  H2O

4. Decomposition
Divorce: One compound separates into 2/more separate molecules.
CaCl2  Ca Cl2

5. Single Replacement
Divorce w/attitude: A single element replaces one of the elements in a compound to form a new compound
MgF H2  HF Mg

6. Double Replacement
Wife Swap: Two compounds switch partners to form two new compounds.
Na2O HCl  H2O NaCl