The Chemistry (or physical science) Complete Semester 2 Worksheet Set (8 Full units!) w/ answer keys is a total of 192 pages! It fully covers the units: Chemical Reactions, Stoichiometry, Gases/Gas Laws, Solutions, Acids and Bases, Thermochemistry, Rates of reactions, and Le Chatelier's Principle. There is a detailed corresponding answer key with all formulas, units and work shown for every problem.Please see the preview (or previews of the products themselves) for a good look at the incredibl