Massive site - lots of Chemistry worksheets/resources and labs - all in very extreme detail. *4**4**1*MATTER*2**4**5*Measurement*6**4* - SI Units and Prefixes*4* - Converting among Units*4* - Converting among Metric Units*4* - Scientific Notation*4* - Working with Scientific Notation*4* - Measurement: Estimating One Place Beyond*4* - Calculating Errors of Measurement*4* - Counting Significant Digits*4* - Calculating with Significant Digits*4**4**4**5*Matter vs Not Matter*6**4*Index Cards*4*Work Sheet*4**4*Classifying Matter: A Concept Map*4**4**5*Element Bingo*6**4* - Element List*4* - Bingo Cards*4* - Bingo Cards (Alternate set)*4* - Element Name Cards*4**4*Alchemy and Chemical Symbols*4*A Compound Problem Elements, Compounds, and Mixtures*4*My Type of Mixture*4*Mixture Mayhem*4**4**1*PERIODIC TABLE*2**4**5*Simulating Medeleev*6**4* - Activity Instructions*4* - Index Cards*4**4**4**5*Periodicity Song*6**4* - Lyrics and Music*4* - Audio File*4* - Flash Movie*4**4*How is the Periodic Table Arranged*4*What Information is on the Periodic Table*4*What are the Trends in the Periodic Table*4*eriodic Table of the Elements on Mars*4*Groups on the Periodic Table*4**4**1*FORMULAE/EQUATIONS*2**4**5*Working with Formulas*6**4* - Formula Mass*4* - Empirical Formulas*4* - Determining Percent Composition*4**4**4* *5*Working with Equations*6**4* - Chemical Change vs. Physical Change*4* - Understanding Chemical Equations*4* - Identifying Reaction Types*4* - Conservation During Chemical Reactions*4* - Balancing Equations*4* - Balancing Equations and Identifying Reaction Types*4* - Everything about Equations*4* - Working with Moles*4* - Stoichiometric Relationships*4**4**4**5*SAT II*6**4* - Formulas from Masses*4* - Mass/Mass Problems*4**1*EQUILIBRIUM*2**4*Collisions Drive Reactions*4*Transition State Theory*4*Role of Energy in Reactions*4*Interpreting Reaction Coordinates*4*A Fine Mess*4*The Speed of Chemistry*4*The Ins and Outs of Equilibrium*4*Are All Equilibria Created Equal*4**4**5*Relieving Stress in Chemistry*6**4*  - Page 1*4* - Page 2*4**4**4**5*SAT II*6**4* - Being Spontantaneous*4**4**1*ACIDS/BASES*2**4*Water: The Neutral Substance*4*Acids and Bases in Water*4*Acid, Base, or Salt*4*Interpreting pH*4*Neutralization Reactions*4*Titration*4*Naming Acids*1*ORGANIC*2**4*Amazing Carbon*4*Emphatically Aliphatic*4*Isomers*4*Condensed Structural Formulas*4*Naming Hydrocarbons*4*Naming Substituted Hydrocarbons*4*Understanding Organic Reactions*4**4**1*ATOMIC STRUCTURE*2**4**5*Early Theories of Matter*6**4* - The Dalton Model*4* - What are Atoms*4* - The Great Atomic Debate*4**4**4* *5*Modern Theories of Matter*6**4* - Understanding the Rutherford Model*4* - Inside an Atom*4* - Understanding the Bohr Model*4* - The Bohr Model vs the Wave Mechanical Model*4**4**4*  *5*Drawing Atomic Diagrams*6**4* - Number of Neutrons*4* - Analyzing the Bohr Atom*4* - Electron Dot Diagrams, Etc.*4**4* Average Atomic Mass*4**4**5*SAT II*6**4* - Where Are the Electrons*4* - Location of Electrons*4**4**1*BONDING*2**4**5*Chemical Bonds*6**4* - How Bonds Form*4* - Ionic Bonds*4* - Losing and Gaining Electrons*4* - Covalent Bonds*4* - Bond Type*4* - Recognizing Polar Molecules*4**4* *5*Chemical Formulas*6**4* - Interpreting Chemical Formulas*4* - Writing Formulas by Crossing Over*4* - Determining the Charge on a Metal Ion*4* - Using the Stock System*4* - Naming Compounds*4* - Naming Binary Covalent Compounds*4* - Naming More Compounds*4* - More Names and Formulas*4* - Naming: Putting it All Together*4**4**4* *5*Non-chemical Bonds*6**4* - Properties of Metals*4* - Intermolecular Forces*4* - The Ties that Bind*4**4*Comparing Covalent and Ionic Substances*4**4**5*SAT II*6**4* - Writing Lewis Structures*4* - Predicting Molecular Shapes*4* - Understanding Hybrid Orbitals*4**4**1*PHASES*2**4*Calculating Joules*4*Specific Heat*4*The Kelvin Scale*4*Comparing Solids, Liquids, and Gases*4*Phase Changes*4*Heating/Cooling Curve*4*Vapor Pressure*4*Using the Combined Gas Law*4*Applying the Gas Laws*4*The Ideal Gas*4**4**5*SAT II*6**4* - Applying Avogadro*apos*s Law*4* - The Ideal Gas Law, Molar Mass, and Density*4* - Gas Stoichiometry*4**4**1*SOLUTIONS*2**4*What's in the Water*4*Solubility Curves*4*Dissolving Solids and Gases*4*Finding Concentration*4*Molarity*4**4**5*Understanding Colligative Properties*6**4* - Page 1*4* - Page 2*4**4**1*ELECTROCHEMISTRY*2**4*Finding the Oxidation State*4*Analyzing Oxidation-Reduction Reactions*4*Writing Half Reactions*4*Applying the Activity Series*4**4**5*A Salt and Battery*6**4* - Page 1*4* - Page 2*4**4*Forcing Electrons to Move*4**4**1*NUCLEAR*2**4**5*Writing Nuclear Equations*6**4* - Page 1*4* - Page 2*4**4*Working with Half-Life*4**4**4*Site also has labs for each topic*4**4**4**4*Extremely useful for teachers of Chemistry.