1. Balancing Equations Remember the Law of Conservation of Mass What you start with you have to end up with You can add more of an atom by changing the coefficients 1 is understood DO NOT CHANGE THE SUBSCRIPTS Start with atoms that only appear once in the formula Metals or other rare elements Balance hydrogen and oxygen last
9. A metal can replace a metal (+) OR a nonmetal can replace a nonmetal (-).
10. element + compound product + productA + BC AC + B (if A is a metal) OR A + BC BA + C (if A is a nonmetal) (remember the cation always goes first!)