Study Tool! Chemical Equations

Here is a terrific link that breaks down chemical equations and the Law of Conservation of Mass:

Chemical Equation Review

When going to this link, you have the ability to watch and listen to video, as well as complete practice problems (click on the tab above the video).  I would pay particular attention to the following (you can click on these titles in the left side bar):

• Identifying the reactants and products
• Identifying the coefficients
• Distinguishing subscripts from coefficients
• Identifying liquids, solids, gases, and aqueous solutions
• Overview for the Law of Conservation of Mass